View source for List of computing and IT abbreviations

{{Short description|none}}
This is a '''list of computing and IT acronyms, initialisms and abbreviations'''.

{{alphanumeric TOC|numbers=yes|references=yes|seealso=yes|externallinks=yes}}

== 0–9 ==
{{div col|colwidth=22em}}
* [[First-generation programming language|1GL]]—First-Generation Programming Language
* [[First normal form|1NF]]—First Normal Form
* [[10BASE2|10B2]]—10BASE-2
* [[10BASE5|10B5]]—10BASE-5
* [[10BASE-F|10B-F]]—10BASE-F
* [[10BASE-FB|10B-FB]]—10BASE-FB
* [[10BASE-FL|10B-FL]]—10BASE-FL
* [[10BASE‑FP|10B-FP]]—10BASE-FP
* [[10BASE-T|10B-T]]—10BASE-T
* [[100BASE-FX|100B-FX]]—100BASE-FX
* [[100BASE-TX|100B-TX]]—100BASE-TX
* [[100BaseVG|100BVG]]—100BASE-VG
* [[Intel 80286|286]]—Intel 80286 processor
* [[2B1Q]]—2 Binary 1 Quaternary
* [[Multi-factor authentication|2FA]]—Two-factor authentication
* [[Second-generation programming language|2GL]]—Second-Generation Programming Language
* [[Second normal form|2NF]]—Second Normal Form
* [[Third-generation programming language|3GL]]—Third-Generation Programming Language
* [[3GPP]]—3rd Generation Partnership Project – 3G comms
* [[3GPP2]]—3rd Generation Partnership Project 2
* [[3NF]]—Third Normal Form
* [[Intel 80386|386]]—Intel 80386 processor
* [[Intel i486|486]]—Intel 80486 processor
* [[4B5B]]LF—4-bit 5-bit Local Fiber
* [[Fourth-generation programming language|4GL]]—Fourth-Generation Programming Language
* [[4NF]]—Fourth Normal Form
* [[Fifth-generation programming language|5GL]]—Fifth-Generation Programming Language
* [[5NF]]—Fifth Normal Form
* [[6NF]]—Sixth Normal Form
* [[8b/10b encoding|8B10BLF]]—8-bit 10-bit Local Fiber
* [[802.11]]—Wireless LAN
{{div col end}}

== A ==
{{div col|colwidth=22em}}
* [[A11Y]]—Accessibility
* [[AAA protocol|AAA]]—Authentication Authorization, Accounting
* [[Minimum bounding box|AABB]]—Axis Aligned Bounding Box
* [[Advanced Audio Coding|AAC]]—Advanced Audio Coding
* [[ATM adaptation layer|AAL]]—ATM Adaptation Layer
* [[ATM adaptation layer|AALC]]—ATM Adaptation Layer Connection
* [[AppleTalk|AARP]]—AppleTalk Address Resolution Protocol
* [[Attribute-based access control|ABAC]]—Attribute-Based Access Control
* [[Actor-Based Concurrent Language|ABCL]]—Actor-Based Concurrent Language
* [[Application binary interface|ABI]]—Application Binary Interface
* [[Asynchronous Balanced Mode|ABM]]—Asynchronous Balanced Mode
* [[Area Border Router|ABR]]—Area Border Router
* [[Automatic baud rate detection|ABR]]—Auto Baud-Rate detection
* [[Available Bit Rate|ABR]]—Available Bitrate
* [[Average bitrate|ABR]]—Average Bitrate
* [[Adaptive bitrate streaming|ABR]]—Adaptive Bitrate (Streaming)
* [[Acoustic coupler|AC]]—Acoustic Coupler
* [[Alternating current|AC]]—Alternating Current
* [[Automatic call distributor|ACD]]—Automatic Call Distributor
* [[Advanced Computing Environment|ACE]]—Advanced Computing Environment
* [[ACID]]—Atomicity Consistency Isolation Durability
* [[Acknowledge character|ACK]]—ACKnowledgement
* [[Amsterdam Compiler Kit|ACK]]—Amsterdam Compiler Kit
* [[Access control list|ACL]]—Access Control List
* [[Active current loop|ACL]]—Active Current Loop
* [[Association for Computing Machinery|ACM]]—Association for Computing Machinery
* [[Automated Classification of Medical Entities|ACME]]—Automated Classification of Medical Entities
* [[IBM Airline Control Program|ACP]]—Airline Control Program
* [[Advanced Configuration and Power Interface|ACPI]]—Advanced Configuration and Power Interface
* [[Allowed cell rate|ACR]]—Allowed Cell Rate
* [[Attenuation to crosstalk ratio|ACR]]—Attenuation to Crosstalk Ratio
* [[Active Directory|AD]]—Active Directory
* [[Administrative domain|AD]]—Administrative Domain
* [[Analog-to-digital converter|ADC]]—Analog-to-Digital Converter
* [[Apple Display Connector|ADC]]—Apple Display Connector
* [[Apple Desktop Bus|ADB]]—Apple Desktop Bus
* [[Advanced Data Communication Control Procedures|ADCCP]]—Advanced Data Communications Control Procedures
* [[ActiveX Data Objects|ADO]]—ActiveX Data Objects
* [[Asymmetric digital subscriber line|ADSL]]—Asymmetric Digital Subscriber Line
* [[Abstract data type|ADT]]—Abstract Data Type
* [[Adaptive equalizer|AE]]—Adaptive Equalizer
* [[Advanced Encryption Standard|AES]]—Advanced Encryption Standard
* [[Anisotropic filtering|AF]]—Anisotropic Filtering
* [[Apple Filing Protocol|AFP]]—Apple Filing Protocol
* [[Artificial general intelligence|AGI]]—Artificial General Intelligence
* [[Accelerated Graphics Port|AGP]]—Accelerated Graphics Port
* [[Active hub|AH]]—Active Hub
* [[Artificial intelligence|AI]]—Artificial Intelligence
* [[IBM AIX|AIX]]—Advanced Interactive eXecutive
* [[Ajax (programming)|Ajax]]—Asynchronous JavaScript and XML
* [[Hyperlink|AL]]—Active Link
* [[Access list|AL]]—Access List
* [[Apple Lossless Audio Codec|ALAC]]—Apple Lossless Audio Codec
* [[ALGOL]]—Algorithmic Language
* [[Advanced Linux Sound Architecture|ALSA]]—Advanced Linux Sound Architecture
* [[Arithmetic logic unit|ALU]]—Arithmetic and Logical Unit
* [[Access method|AM]]—Access Method
* [[Active-matrix liquid crystal display|AM]]—Active Matrix
* [[AMOLED]]—Active-Matrix Organic Light-Emitting Diode
* [[Active monitor|AM]]—Active Monitor
* [[I Have No Mouth, and I Must Scream|AM]]—Allied Mastercomputer
* [[Amplitude modulation|AM]]—Amplitude Modulation
* [[Advanced Micro Devices|AMD]]—Advanced Micro Devices
* [[Advanced Message Queuing Protocol|AMQP]]—Advanced Message Queuing Protocol
* [[Audio/modem riser|AMR]]—Audio Modem Riser
* [[Artificial neural network|ANN]]—Artificial Neural Network
* [[American National Standards Institute|ANSI]]—American National Standards Institute
* [[Apache Ant|ANT]]—Another Neat Tool
* [[ATA over Ethernet|AoE]]—ATA over Ethernet
* [[Aspect-oriented programming|AOP]]—Aspect-Oriented Programming
* [[Ahead-of-time compilation|AOT]]—Ahead-Of-Time
* [[Application Layer|APCI]]—Application-Layer Protocol Control Information
* [[Application programming interface|API]]—Application Programming Interface
* [[Advanced Programmable Interrupt Controller|APIC]]—Advanced Programmable Interrupt Controller
* [[APIPA]]—Automatic Private IP Addressing
* [[APL (programming language)|APL]]—A Programming Language
* [[Apache Portable Runtime|APR]]—Apache Portable Runtime
* [[Adaptive replacement cache|ARC]]—Adaptive Replacement Cache
* [[Advanced RISC Computing|ARC]]—Advanced RISC Computing
* [[American Registry for Internet Numbers|ARIN]]—American Registry for Internet Numbers
* [[ARM Holdings|ARM]]—Advanced RISC Machines
* [[AROS Research Operating System|AROS]]—AROS Research Operating System
* [[Address Resolution Protocol|ARP]]—Address Resolution Protocol
* [[.arpa|ARPA]]—Address and Routing Parameter Area
* [[Advanced Research Projects Agency|ARPA]]—Advanced Research Projects Agency
* [[ARPANET]]—Advanced Research Projects Agency Network
* [[Network access server|AS]]—Access Server
* [[ASCII]]—American Standard Code for Information Interchange
* [[AuthIP]]—Authenticated Internet Protocol
* [[Abstract semantic graph|ASG]]—Abstract Semantic Graph
* [[Application-specific integrated circuit|ASIC]]—Application-Specific Integrated Circuit
* [[ASIMO]]—Advanced Step in Innovative Mobility
* [[Address space layout randomization|ASLR]]—Address Space Layout Randomization
* [[Algorithmic state machine|ASM]]—Algorithmic State Machine
* [[Asymmetric multiprocessing|ASMP]]—Asymmetric Multiprocessing
* [[Abstract Syntax Notation One|ASN.1]]—Abstract Syntax Notation 1
* [[Active Server Pages|ASP]]—Active Server Pages
* [[Application service provider|ASP]]—Application Service Provider
* [[Signal (computing)|ASR]]—Asynchronous Signal Routine
* [[Abstract syntax tree|AST]]—Abstract Syntax Tree
* [[IBM Personal Computer/AT|AT]]—Advanced Technology
* [[Access time|AT]]—Access Time
* [[Active terminator|AT]]—Active Terminator
* [[Advanced Technology Attachment|ATA]]—Advanced Technology Attachment
* [[Authoring Tool Accessibility Guidelines|ATAG]]—Authoring Tool Accessibility Guidelines
* [[AT Attachment|ATAPI]]—Advanced Technology Attachment Packet Interface
* [[Asynchronous Transfer Mode|ATM]]—Asynchronous Transfer Mode
* [[AuthN]]—Authentication
* [[AuthZ]]—Authorization
* [[Antivirus software|AV]]—Antivirus
* [[H.264/MPEG-4 AVC|AVC]]—Advanced Video Coding
* [[Audio Video Interleave|AVI]]—Audio Video Interleaved
* [[AWK]]—Aho Weinberger Kernighan
* [[Amazon Web Services|AWS]]—Amazon Web Services
* [[Abstract Window Toolkit|AWT]]—Abstract Window Toolkit
{{div col end}}

== B ==
{{div col|colwidth=22em}}
* [[Business-to-business|B2B]]—Business-to-Business
* [[Business-to-consumer|B2C]]—Business-to-Consumer
* [[Business-to-employee|B2E]]—Business-to-Employee
* [[IBM Basic assembly language|BAL]]—Basic Assembly Language
* [[Block availability map|BAM]]—Block Availability Map
* [[Bash (Unix shell)|Bash]]—Bourne-again shell
* [[BASIC]]—Beginner's All-Purpose Symbolic Instruction Code
* [[Baseband processor|BBP]]—Baseband Processor
* [[Bulletin board system|BBS]]—Bulletin Board System
* [[Business Continuity|BC]]—Business Continuity
* [[Blind Carbon Copy|BCC]]—Blind Carbon Copy
* [[Binary-coded decimal|BCD]]—Binary Coded Decimal
* [[Boot Configuration Data|BCD]]—Boot Configuration Data
* [[Boyce–Codd normal form|BCNF]]—Boyce–Codd normal form
* [[Business Continuity Planning|BCP]]—Business Continuity Planning
* [[Request for Comments#Best Current Practice|BCP]]—Best Current Practice
* [[Backend (computing)|BE]]—Backend
* [[BEEP]]—Blocks Extensible Exchange Protocol
* [[Bit error ratio|BER]]—Bit Error Rate
* [[Bidirectional Forwarding Detection|BFD]]—Bidirectional Forwarding Detection
* [[Binary File Descriptor library|BFD]]—Binary File Descriptor
* [[Breadth-first search|BFS]]—Breadth-First Search
* [[Byzantine fault tolerance|BFT]]—Byzantine Fault Tolerant
* [[Border Gateway Protocol|BGP]]—Border Gateway Protocol
* [[Business intelligence|BI]]—Business Intelligence
* [[Bi-directional text|BiDi]]—Bi-Directional
* [[Binary file|bin]]—binary
* [[BINAC]]—Binary Automatic Computer
* [[BIND]]—Berkeley Internet Name Domain
* [[BIOS]]—Basic Input Output System
* [[Bipolar junction transistor|BJT]]—Bipolar Junction Transistor
* [[bit]]—binary digit
* [[Binary large object|Blob]]—Binary large object
* [[Blog]]—Web Log
* [[Basic Multilingual Plane|BMP]]—Basic Multilingual Plane
* [[BNC connector|BNC]]—Baby Neill Constant
* [[Berkeley Open Infrastructure for Network Computing|BOINC]]—Berkeley Open Infrastructure for Network Computing
* [[Byte order mark|BOM]]—Byte Order Mark
* [[Bootstrap Protocol|BOOTP]]—Bootstrap Protocol
* [[BPDU]]—Bridge Protocol Data Unit
* [[Business Process Execution Language|BPEL]]—Business Process Execution Language
* [[Power line communication|BPL]]—Broadband over Power Lines
* [[Business Process Management|BPM]]—Business Process Management
* [[Business process modeling|BPM]]—Business Process Modeling
* [[bit rate|bps]]—bits per second
* [[Business reference model|BRM]]—Business Reference Model
* [[Business rule management system|BRMS]]—Business Rule Management System
* [[Business Readiness Rating|BRR]]—Business Readiness Rating
* [[Multichannel Multipoint Distribution Service|BRS]]—Broadband Radio Service
* [[Business Software Alliance|BSA]]—Business Software Alliance
* [[Back-side bus|BSB]]—Backside Bus
* [[Berkeley Software Distribution|BSD]]—Berkeley Software Distribution
* [[Blue Screen of Death|BSoD]]—Blue Screen of Death
* [[.bss|BSS]]—Block Started by Symbol
* [[BitTorrent (protocol)|BT]]—BitTorrent
* [[Bluetooth|BT]]—Bluetooth 
* [[Basic telecommunications access method|B TAM]]—Basic Telecommunications Access Method
* [[Bandwidth (computing)|BW]]—Bandwidth
* [[Bring your own device|BYOD]]—Bring Your Own Device
* [[Byte]]—By eight (group of 8 bits)
{{div col end}}

== C ==
{{div col|colwidth=22em}}

* [[Computer architecture|CA]]—Computer Accountancy 
* [[Computer-aided design|CAD]]—Computer-Aided Design
* [[Computer-aided engineering|CAE]]—Computer-Aided Engineering
* [[Computer-aided industrial design|CAID]]—Computer-Aided Industrial Design
* [[E-learning|CAI]]—Computer-Aided Instruction
* [[Computer-aided manufacturing|CAM]]—Computer-Aided Manufacturing
* [[CAP_theorem|CAP]]—Consistency Availability Partition tolerance (theorem)
* [[CAPTCHA]]—Completely Automated Public Turing Test to tell Computers and Humans Apart
* [[Computer-assisted translation|CAT]]—Computer-Aided Translation
* [[Computer-aided quality|CAQ]]—Computer-Aided Quality Assurance
* [[Computer-aided software engineering|CASE]]—Computer-Aided Software Engineering
* [[GNU Compiler Collection|cc]]—C Compiler
* [[Carbon Copy|CC]]—Carbon Copy
* [[Compact Disc|CD]]—Compact Disc
* [[Common Desktop Environment|CDE]]—Common Desktop Environment
* [[Code-division multiple access|CDMA]]—Code-Division Multiple Access
* [[Content delivery network|CDN]]—Content Delivery Network
* [[Cisco Discovery Protocol|CDP]]—Cisco Discovery Protocol
* [[Continuous data protection|CDP]]—Continuous Data Protection
* [[CD-R]]—CD-Recordable
* [[CD-ROM]]—CD Read-Only Memory
* [[CD-RW]]—CD-Rewritable
* [[Computer security#Security architecture|CDSA]]—Common Data Security Architecture
* [[Computer Emergency Response Team|CERT]]—Computer Emergency Response Team
* [[Consumer Electronics Show|CES]]—Consumer Electronics Show
* [[Compact Flash|CF]]—Compact Flash
* [[Computational fluid dynamics|CFD]]—Computational Fluid Dynamics
* [[Context-free grammar|CFG]]—Context-Free Grammar
* [[Control-flow graph|CFG]]—Control-Flow Graph
* [[Computer graphics|CG]]—Computer Graphics
* [[Color Graphics Adapter|CGA]]—Color Graphics Array
* [[Common Gateway Interface|CGI]]—Common Gateway Interface
* [[Computer-generated imagery|CGI]]—Computer-Generated Imagery
* [[Graph theory|CGT]]—Computational Graph Theory
* [[Challenge-handshake authentication protocol|CHAP]]—Challenge-Handshake Authentication Protocol
* [[Cylinder-head-sector|CHS]]—Cylinder-Head-Sector
* [[Classless Inter-Domain Routing|CIDR]]—Classless Inter-Domain Routing
* [[Server Message Block|CIFS]]—Common Internet Filesystem
* [[Common Information Model (computing)|CIM]]—Common Information Model
* [[Chief information officer|CIO]]—Chief Information Officer
* [[Committed information rate|CIR]]—Committed information rate
* [[Complex instruction set computer|CISC]]—Complex Instruction Set Computer
* [[Computer Information Technology|CIT]]—Computer Information Technology
* [[CJK characters|CJK]]—Chinese, Japanese, and Korean
* [[CJKV]]—Chinese, Japanese, Korean, and Vietnamese
* [[Command-line interface|CLI]]—Command Line Interface
* [[Common Language Runtime|CLR]]—Common Language Runtime
* [[Configuration management|CM]]—Configuration Management
* [[Content management|CM]]—Content Management
* [[Configuration management database|CMDB]]—Configuration Management Database
* [[Capability Maturity Model Integration|CMMI]]—Capability Maturity Model Integration
* [[CMOS]]—Complementary Metal-Oxide Semiconductor
* [[Content management system|CMS]]—Content Management System
* [[Active Directory|CN]]—Canonical Name
* [[Lightweight Directory Access Protocol|CN]]—Common Name
* [[CNC]]—Computer Numerical Control
* [[Cryptographic Next Generation|CNG]]—Cryptographic Next Generation
* [[Communications and networking riser|CNR]]—Communications and Networking Riser
* [[COBOL]]—Common Business-Oriented Language
* [[Component Object Model|COM]]—Component Object Model or communication
* [[Common Object Request Broker Architecture|CORBA]]—Common Object Request Broker Architecture
* [[Cross-origin_resource_sharing|CORS]]—Cross-Origin Resource Sharing
* [[Commercial off-the-shelf|COTS]]—Commercial Off-The-Shelf
* [[Cell (microprocessor)|CPA]]—Cell Processor Architecture
* [[CPAN]]—Comprehensive Perl Archive Network
* [[CP/M]]—Control Program/Monitor
* [[Common Public Radio Interface|CPRI]]—Common Public Radio Interface
* [[Characters Per Second|CPS]]—characters per second
* [[Central processing unit|CPU]]—Central Processing Unit
* [[Command–query separation|CQS]]—Command–query separation
* [[Command Query Responsibility Segregation|CQRS]]—Command Query Responsibility Segregation
* [[Carriage return|CR]]—Carriage Return
* [[R (programming language)|CRAN]]—Comprehensive R Archive Network
* [[Cyclic redundancy check|CRC]]—Cyclic Redundancy Check
* [[Newline|CRLF]]—Carriage Return Line Feeds
* [[Customer relationship management|CRM]]—Customer Relationship Management
* [[Computer reservations system|CRS]]—Computer Reservations System
* [[Cathode-ray tube|CRT]]—Cathode-Ray Tube
* [[Create, read, update and delete|CRUD]]—Create, Read, Update and Delete
* [[AT Attachment|CS]]—Cable Select
* [[Computer science|CS]]—Computer Science
* [[Computer Science and Engineering|CSE]]—Computer Science and Engineering
* [[Common System Interface|CSI]]—Common System Interface
* [[Compatibility Support Module|CSM]]—Compatibility Support Module
* [[Carrier-sense multiple access with collision detection|CSMA/CD]]—Carrier-sense multiple access with collision detection
* [[Cloud service provider|CSP]]—Cloud Service Provider
* [[Communicating sequential processes|CSP]]—Communicating Sequential Processes
* [[Cross-site request forgery|CSRF]]—Cross-Site Request Forgery
* [[Cascading Style Sheets|CSS]]—Cascading Style Sheets
* [[Content Scramble System|CSS]]—Content-Scrambling System
* [[Closed source|CSS]]—Closed Source Software
* [[Cross-site scripting|CSS]]—Cross-Site Scripting
* [[Comma-separated values|CSV]]—Comma-Separated Values
* [[Computed axial tomography|CT]]—Computerized Tomography
* [[CTAN]]—Comprehensive TeX Archive Network
* [[Client-to-client protocol|CTCP]]—Client-To-Client Protocol
* [[Computer telephony integration|CTI]]—Computer Telephony Integration
* [[Compile-time function execution|CTFE]]—Compile-time function execution
* [[Computation tree logic|CTL]]—Computational Tree Logic
* [[Close to Metal|CTM]]—Close To Metal
* [[Flow control (data)|CTS]]—Clear To Send
* [[Compatible Time-Sharing System|CTSS]]—Compatible Time-Sharing System
* [[IBM Common User Access|CUA]]—Common User Access
* [[Common Vulnerabilities and Exposures|CVE]]—Common Vulnerabilities and Exposures
* [[Concurrent Versions System|CVS]]—Concurrent Versioning System
* [[Customer Experience|CX]]—Customer Experience
{{div col end}}

== D ==
{{div col|colwidth=22em}}
* [[Digital-to-analog converter|DAC]]—Digital-To-Analog Converter
* [[Discretionary access control|DAC]]—Discretionary Access Control
* [[Database Abstraction Layer|DAL]]—Database Abstraction Layer
* [[Data access object|DAO]]—Data Access Object
* [[Data Access Objects|DAO]]—Data Access Objects
* [[Optical disc recording modes|DAO]]—Disk-At-Once
* [[Directory Access Protocol|DAP]]—Directory Access Protocol
* [[DARPA]]—Defense Advanced Research Projects Agency
* [[Direct Attached Storage|DAS]]—Direct Attached Storage
* [[Digital Audio Tape|DAT]]—Digital Audio Tape
* [[Database|DB]]—Database
* [[Desktop computer|DSKT]]—Desktop
* [[Database administrator|DBA]]—Database Administrator
* [[Double-byte character set|DBCS]]—Double Byte Character Set
* [[Database management system|DBMS]]—Database Management System
* [[Direct Client-to-Client|DCC]]—Direct Client-to-Client
* [[Datagram Congestion Control Protocol|DCCP]]—Datagram Congestion Control Protocol
* [[DCC Alliance|DCCA]]—Debian Common Core Alliance
* [[Data Control Language|DCL]]—Data Control Language
* [[Distributed Control System|DCS]]—Distributed Control System
* [[Dublin Core|DCMI]]—Dublin Core Metadata Initiative
* [[Distributed Component Object Model|DCOM]]—Distributed Component Object Model
* [[Double density|DD]]—Double Density
* [[Dynamic Data Exchange|DDE]]—Dynamic Data Exchange
* [[Data Definition Language|DDL]]—Data Definition Language
* [[DDoS]]—Distributed Denial of Service
* [[DDR SDRAM|DDR]]—Double Data Rate
* [[Digital Equipment Corporation|DEC]]—Digital Equipment Corporation
* [[Data Encryption Standard|DES]]—Data Encryption Standard
* [[:/dev|dev]]—development
* [[Deterministic finite automaton|DFA]]—Deterministic Finite Automaton
* [[Data flow diagram|DFD]]—Data Flow Diagram
* [[Depth-first search|DFS]]—Depth-First Search
* [[Distributed file system|DFS]]—Distributed File System
* [[Dworkin's Game Driver|DGD]]—Dworkin's Game Driver
* [[Dynamic Host Configuration Protocol|DHCP]]—Dynamic Host Configuration Protocol
* [[Dynamic HTML|DHTML]]—Dynamic Hypertext Markup Language
* [[Data Integrity Field|DIF]]—Data Integrity Field
* [[DIMM]]—Dual Inline Memory Module
* [[Deutsches Institut für Normung|DIN]]—Deutsches Institut für Normung
* [[Dual in-line package|DIP]]—Dual In-line Package
* [[DISM]]—Deployment Image and Service Management Tool
* [[DIVX (Digital Video Express)|DIVX]]—Digital Video Express
* [[DomainKeys Identified Mail|DKIM]]—Domain Keys Identified Mail
* [[Download|DL]]—Download
* [[Dynamic-link library|DLL]]—Dynamic Link Library
* [[Digital Living Network Alliance|DLNA]]—Digital Living Network Alliance
* [[Direct memory access|DMA]]—Direct Memory Access
* [[Digital Millennium Copyright Act|DMCA]]—Digital Millennium Copyright Act
* [[Direct Media Interface|DMI]]—Direct Media Interface
* [[Data Manipulation Language|DML]]—Data Manipulation Language
* [[Definitive Media Library|DML]]—Definitive Media Library
* [[Dennis Ritchie|DMR]]—Dennis M. Ritchie
* [[DMZ (computing)|DMZ]]—Demilitarized Zone
* [[Lightweight Directory Access Protocol|DN]]—Distinguished Name
* [[Drag-and-drop|DND]]—Drag-and-Drop
* [[Domain Name System|DNS]]—Domain Name System
* [[Dead on arrival|DOA]]—Dead on Arrival
* [[DOCSIS]]—Data Over Cable Service Interface Specification
* [[Document Object Model|DOM]]—Document Object Model
* [[DORA (computing)|DORA]]—Discover, Offer, Request, Acknowledge
* [[Denial-of-service attack|DoS]]—Denial of Service
* [[DOS]]—Disk Operating System
* [[Dot pitch|DP]]—Dot Pitch
* [[Deferred Procedure Call|DPC]]—Deferred Procedure Call
* [[Deep packet inspection|DPI]]—Deep Packet Inspection
* [[Dots per inch|DPI]]—Dots Per Inch
* [[DOS Protected Mode Interface|DPMI]]—DOS Protected Mode Interface
* [[VESA Display Power Management Signaling|DPMS]]—Display Power Management Signaling
* [[IT disaster recovery|DR]]—Disaster Recovery
* [[Dynamic random-access memory|DRAM]]—Dynamic Random-Access Memory
* [[DR-DOS]]—Digital Research – Disk Operating System
* [[Direct Rendering Infrastructure|DRI]]—Direct Rendering Infrastructure
* [[Digital rights management|DRM]]—Digital Rights Management
* [[Direct Rendering Manager|DRM]]—Direct Rendering Manager
* [[Digital Signature Algorithm|DSA]]—Digital Signature Algorithm
* [[Document Schema Definition Languages|DSDL]]—Document Schema Definition Languages
* [[Dynamic Systems Development Method|DSDM]]—Dynamic Systems Development Method
* [[Digital subscriber line|DSL]]—Digital Subscriber Line
* [[Domain-specific language|DSL]]—Domain-Specific Language
* [[Digital subscriber line access multiplexer|DSLAM]]—Digital Subscriber Line Access Multiplexer
* [[Database Source Name|DSN]]—Database Source Name
* [[Data set (IBM mainframe)|DSN]]—Data Set Name
* [[Digital signal processor|DSP]]—Digital Signal Processor
* [[Document Style Semantics and Specification Language|DSSSL]]—Document Style Semantics and Specification Language
* [[Document Type Definition|DTD]]—Document Type Definition
* [[Data terminal equipment|DTE]]—Data Terminal Equipment or data transfer rate
* [[Data Transfer Object|DTO]]—Data Transfer Object
* [[Desktop publishing|DTP]]—Desktop Publishing
* [[RS-232|DTR]]—Data Terminal Ready or Data transfer rate
* [[DVD]]—Digital Versatile Disc or Digital Video Disc
* [[DVD-R]]—DVD-Recordable
* [[DVD-ROM]]—DVD-Read-Only Memory
* [[DVD-RW]]—DVD-Rewritable
* [[Digital Visual Interface|DVI]]—Digital Visual Interface
* [[Digital video recorder|DVR]]—Digital Video Recorder
* [[Data Warehouse|DW]]—Data Warehouse
{{div col end}}

== E ==
{{div col|colwidth=22em}}
* [[Enterprise application integration|EAI]]—Enterprise Application Integration
* [[Extensible Authentication Protocol|EAP]]—Extensible Authentication Protocol
* [[Exchange ActiveSync|EAS]]—Exchange ActiveSync
* [[Extended Binary Coded Decimal Interchange Code|EBCDIC]]—Extended Binary Coded Decimal Interchange Code
* [[Extensible Binary Meta Language|EBML]]—Extensible Binary Meta Language
* [[Elliptic curve cryptography|ECC]]—Elliptic Curve Cryptography
* [[Ecma International|ECMA]]—European Computer Manufacturers Association
* [[Explicit Congestion Notification|ECN]]—Explicit Congestion Notification
* [[eCos|ECOS]]—Embedded Configurable Operating System
* [[Expense and Cost Recovery System (ECRS)|ECRS]]—Expense and Cost Recovery System
* [[Entity component system|ECS]]—Entity-Component-System
* [[Electronic design automation|EDA]]—Electronic Design Automation
* [[Enhanced Data Rates for GSM Evolution|EDGE]]—Enhanced Data rates for GSM Evolution
* [[Electronic Data Interchange|EDI]]—Electronic Data Interchange
* [[Dynamic random access memory|EDO]]—Extended Data Out
* [[Electronic Delay Storage Automatic Calculator|EDSAC]]—Electronic Delay Storage Automatic Calculator
* [[EDVAC]]—Electronic Discrete Variable Automatic Computer
* [[EEPROM]]—Electronically Erasable Programmable Read-Only Memory
* [[Electronic Frontier Foundation|EFF]]—Electronic Frontier Foundation
* [[Extensible Firmware Interface|EFI]]—Extensible Firmware Interface
* [[Eight-to-fourteen modulation|EFM]]—Eight-to-Fourteen Modulation
* [[Ethernet in the First Mile|EFM]]—Ethernet in the First Mile
* [[Encrypting File System|EFS]]—Encrypting File System
* [[Enhanced Graphics Adapter|EGA]]—Enhanced Graphics Array
* [[Electronic mail|E-mail]]—Electronic mail
* [[Exterior Gateway Protocol|EGP]]—Exterior Gateway Protocol
* [[Electronic identity card|eID]]—electronic ID card
* [[EIDE]]—Enhanced IDE
* [[Enhanced Interior Gateway Routing Protocol|EIGRP]]—Enhanced Interior Gateway Routing Protocol
* [[Extended Industry Standard Architecture|EISA]]—Extended Industry Standard Architecture
* [[Extremely low frequency|ELF]]—Extremely Low Frequency
* [[Executable and Linkable Format|ELF]]—Executable and Linkable Format
* [[Elm (e-mail client)|ELM]]—ELectronic Mail
* [[Emacs|EMACS]]—Editor MACroS
* [[Expanded memory|EMS]]—Expanded Memory Specification
* [[ENIAC]]—Electronic Numerical Integrator And Computer
* [[End-of-file|EOF]]—End of File
* [[End-of-life product|EOL]]—End of Life
* [[Newline|EOL]]—End of Line
* [[End of Message|EOM]]—End of Message
* [[End-of-support|EOS]]—End of Support
* [[Explicitly parallel instruction computing|EPIC]]—Explicitly Parallel Instruction Computing
* [[EPROM]]—Erasable Programmable Read-Only Memory
* [[Entity–relationship diagram|ERD]]—Entity–Relationship Diagram
* [[Entity–relationship model|ERM]]—Entity–Relationship Model
* [[Enterprise resource planning|ERP]]—Enterprise Resource Planning
* [[external SATA|eSATA]]—external SATA
* [[Enterprise service bus|ESB]]—Enterprise service bus
* [[ESCON]]—Enterprise Systems Connection
* [[Electrostatic discharge|ESD]]—Electrostatic Discharge
* [[Electronically Stored Information|ESI]]—Electronically Stored Information
* [[Eric S. Raymond|ESR]]—Eric Steven Raymond
* [[Extract, transform, load|ETL]]—Extract, Transform, Load
* [[Event Tracing for Windows|ETW]]—Event Tracing for Windows
* [[Extended Unix Code|EUC]]—Extended Unix Code
* [[End user license agreement|EULA]]—End User License Agreement
* [[Extended Window Manager Hints|EWMH]]—Extended Window Manager Hints
* [[Extended file system|EXT]]—EXTended file system
* [[Estimated Time of Arrival|ETA]]—Estimated Time of Arrival
{{div col end}}

== F ==
{{div col|colwidth=22em}}
* [[FORTRAN Assembly Program|FAP]]—FORTRAN Assembly Program
* [[FASM]]—Flat ASseMbler
* [[File Allocation Table|FAT]]—File Allocation Table
* [[FAQ]]—Frequently Asked Questions
* [[Fully Buffered DIMM|FBDIMM]]—Fully Buffered Dual Inline Memory Module
* [[FC-AL]]—Fibre Channel Arbitrated Loop
* [[File control block|FCB]]—File Control Block
* [[Frame check sequence|FCS]]—Frame Check Sequence
* [[Floppy-disk controller|FDC]]—Floppy-Disk Controller
* [[Fedora Directory Server|FDS]]—Fedora Directory Server
* [[Frequency-division multiple access|FDD]]—Frequency-Division Duplexing
* [[Floppy disk drive|FDD]]—Floppy Disk Drive
* [[Fiber distributed data interface|FDDI]]—Fiber Distributed Data Interface
* [[Frequency-division multiplexing|FDM]]—Frequency-Division Multiplexing
* [[Frequency-division multiple access|FDMA]]—Frequency-Division Multiple Access
* [[Frontend (computing)|FE]]—Frontend
* [[Forward error correction|FEC]]—Forward Error Correction
* [[S-LINK|FEMB]]—Front-End Motherboard
* [[Field-effect transistor|FET]]—Field Effect Transistor
* [[Filesystem Hierarchy Standard|FHS]]—Filesystem Hierarchy Standard
* [[FICON]]—FIber CONnectivity
* [[FIFO (computing and electronics)|FIFO]]—First In First Out
* [[FIPS 140|FIPS]]—Federal Information Processing Standards
* [[FL (programming language)|FL]]—Function Level
* [[Free Lossless Audio Codec|FLAC]]—Free Lossless Audio Codec
* [[FLOPS]]—FLoating-Point Operations Per Second
* [[Free and open-source software|FLOSS]]—Free/Libre/Open-Source Software
* [[Fixed Mobile Convergence|FMC]]—Fixed Mobile Convergence "Mobile UC or Unified Communications over Wireless" 
* [[Free On-line Dictionary of Computing|FOLDOC]]—Free On-line Dictionary of Computing
* [[Formula Translation|FORTRAN]]—Formula Translation
* [[FOSDEM]]—Free and Open-source Software Developers' European Meeting
* [[Formatting Output Specification Instance|FOSI]]—Formatted Output Specification Instance
* [[Free and open-source software|FOSS]]—Free and Open-Source Software
* [[FP (programming language)|FP]]—Function Programming
* [[Functional programming|FP]]—Functional Programming
* [[Field-programmable gate array|FPGA]]—Field Programmable Gate Array
* [[Floating Point Systems|FPS]]—Floating Point Systems
* [[Floating-point unit|FPU]]—Floating-Point Unit
* [[Field-replaceable unit|FRU]]—Field-Replaceable Unit
* [[File system|FS]]—File System
* [[Front-side bus|FSB]]—Front-Side Bus
* [[fsck]]—File System Check
* [[Free Software Foundation|FSF]]—Free Software Foundation
* [[Finite-state machine|FSM]]—Finite State Machine
* [[Fiber to the Curb|FTTC]]—Fiber To The Curb
* [[Fiber to the home|FTTH]]—Fiber To The Home
* [[Fiber to the premises|FTTP]]—Fiber To The Premises
* [[File Transfer Protocol|FTP]]—File Transfer Protocol
* [[Fully qualified domain name|FQDN]]—Fully Qualified Domain Name
* [[Fear, uncertainty and doubt|FUD]]—Fear Uncertainty Doubt
* [[Whitespace (computer science)|FWS]]—Folding White Space
* [[File eXchange Protocol|FXP]]—File eXchange Protocol
* [[For Your Information|FYI]]—For Your Information
{{div col end}}

== G ==
{{div col|colwidth=22em}}
* [[Globalization|G11N]]—Globalization
* [[GNU Assembler|Gas]]—GNU Assembler
* [[Gigabit|Gb]]—Gigabit
* [[Gigabyte|GB]]—Gigabyte
* [[Gigabits per second|Gbps]]—Gigabits per second
* [[GNU Compiler Collection|GCC]]—GNU Compiler Collection
* [[GNU Compiler for Java|GCJ]]—GNU Compiler for Java
* [[Google Cloud Platform|GCP]]—Google Cloud Platform
* [[Group coded recording|GCR]]—Group Coded Recording
* [[GNU Debugger|GDB]]—GNU Debugger
* [[Graphics Device Interface|GDI]]—Graphics Device Interface
* [[GNU Free Documentation License|GFDL]]—GNU Free Documentation License
* [[Graphics Interchange Format|GIF]]—Graphics Interchange Format
* [[Garbage In, Garbage Out|GIGO]]—Garbage In, Garbage Out
* [[GIMP]]—GNU Image Manipulation Program
* [[Great Internet Mersenne Prime Search|GIMPS]]—Great Internet Mersenne Prime Search
* [[Geographic information system|GIS]]—Geographic Information System
* [[OpenGL Utility Toolkit|GLUT]]—OpenGL Utility Toolkit
* [[Geography Markup Language|GML]]—Geography Markup Language
* [[GNOME]]—GNU Network Object Model Environment
* [[GNU]]—GNU's Not Unix
* [[GOMS]]—Goals, Operators, Methods, and Selection rules
* [[GPUTILS|GPASM]]—GNU PIC ASseMbler
* [[IBM General Parallel File System|GPFS]]—General Parallel File System
* [[GNU Privacy Guard|GPG]]—GNU Privacy Guard
* [[GPGPU]]—General-Purpose Computing on Graphics Processing Units
* [[GPIB]]—General-Purpose Instrumentation Bus
* [[GNU General Public License|GPL]]—General Public License
* [[Domain-specific language|GPL]]—General-Purpose Language
* [[General Packet Radio Service|GPRS]]—General Packet Radio Service
* [[GUID Partition Table|GPT]]—GUID Partition Table
* [[Graphics processing unit|GPU]]—Graphics Processing Unit
* [[GNU GRUB|GRUB]]—Grand Unified Boot-Loader
* [[GERAN]]—GSM EDGE Radio Access Network
* [[GSM]]—Global System for Mobile Communications
* [[GTK]]/GTK+—GIMP Toolkit<ref>{{cite web |url=http://www.linuxworld.com/linuxworld/lw-1999-01/lw-01-gimp.html |title=LinuxWorld - Where did Spencer Kimball and Peter Mattis go? |access-date=2013-08-19 |url-status=dead |archive-url=https://web.archive.org/web/19990417052141/http://www.linuxworld.com/linuxworld/lw-1999-01/lw-01-gimp.html |archive-date=17 April 1999 }}</ref>
* [[Graphical user interface|GUI]]—Graphical User Interface
* [[Globally Unique Identifier|GUID]]—Globally Unique IDentifier
* [[Google Web Toolkit|GWT]]—Google Web Toolkit
{{div col end}}

== H ==
{{div col|colwidth=22em}}
* [[High availability|HA]]—High availability
* [[Hardware abstraction layer|HAL]]—Hardware Abstraction Layer
* [[Houston Automatic Spooling Priority|HASP]]—Houston Automatic Spooling Priority
* [[Host adapter|HBA]]—Host Bus Adapter
* [[Human–computer interaction|HCI]]—Human—Computer Interaction
* [[High Density|HD]]—High Density
* [[Hard disk drive|HDD]]—Hard Disk Drive
* [[Hardware compatibility list|HCL]]—Hardware Compatibility List
* [[HD DVD]]—High Definition DVD
* [[Hardware description language|HDL]]—Hardware Description Language
* [[HDMI]]—High-Definition Multimedia Interface
* [[HECI]]—Host Embedded Controller Interface
* [[High frequency|HF]]—High Frequency
* [[Hierarchical File System (Apple)|HFS]]—Hierarchical File System
* [[Hybrid drive|HHD]]—Hybrid Hard Drive
* [[Human interface device|HID]]—Human Interface Device
* [[Human interface guidelines|HIG]]—Human Interface Guidelines
* [[GNU Hurd|HIRD]]—Hurd of Interfaces Representing Depth
* [[IBM High-Level Assembler|HLASM]]—High Level ASseMbler
* [[HTTP Live Streaming|HLS]]—HTTP Live Streaming
* [[High memory area|HMA]]—High Memory Area
* [[Hewlett-Packard|HP]]—Hewlett-Packard
* [[High-performance computing|HPC]]—High-Performance Computing
* [[High Performance File System|HPFS]]—High Performance File System
* [[High-Speed Downlink Packet Access|HSDPA]]—High-Speed Downlink Packet Access
* [[High-throughput computing|HTC]]—High-Throughput Computing
* [[Hierarchical storage management|HSM]]—Hierarchical Storage Management
* [[Hyper-threading|HT]]—Hyper Threading
* [[Hierarchical temporal memory|HTM]]—Hierarchical Temporal Memory
* [[HTML]]—Hypertext Markup Language
* [[Hypertext Transfer Protocol|HTTP]]—Hypertext Transfer Protocol
* [[Daemon (computer software)|HTTPd]]—Hypertext Transport Protocol Daemon
* [[HTTPS]]—HTTP Secure
* [[HyperTransport|HTX]]—HyperTransport eXpansion
* [[GNU Hurd|HURD]]—Hird of Unix-Replacing Daemons
* [[Holographic Versatile Disc|HVD]]—Holographic Versatile Disc
* [[Hertz|Hz]]—Hertz{{div col end}}

== I ==
{{div col|colwidth=22em}}
* [[I²C]]—Inter-Integrated Circuit
* [[I²S]]—Integrated Interchip Sound
* [[Internationalization and localization|I18N]]—Internationalization
* [[Internet Assigned Numbers Authority|IANA]]—Internet Assigned Numbers Authority
* [[IaaS]]—Infrastructure as a Service
* [[Infrastructure as code|IaC]]—Infrastructure as Code
* [[Application binary interface|iBCS]]—Intel Binary Compatibility Standard
* [[IBM]]—International Business Machines
* [[Integrated circuit|IC]]—Integrated Circuit
* [[ICANN]]—Internet Corporation for Assigned Names and Numbers
* [[In-circuit emulator|ICE]]—In-Circuit Emulator
* [[Intrusion Countermeasures Electronics|ICE]]—Intrusion Countermeasure Electronics
* [[I/O Controller Hub|ICH]]—I/O Controller Hub 
* [[Internet Control Message Protocol|ICMP]]—Internet Control Message Protocol
* [[Internet Cache Protocol|ICP]]—Internet Cache Protocol
* [[Internet Connection Sharing|ICS]]—Internet Connection Sharing
* [[Information technology|ICT]]—Information and Communication Technology
* [[Integrated development environment|IDE]]—Integrated Development Environment
* [[Advanced Technology Attachment|IDE]]—Integrated Drive Electronics
* [[Intermediate distribution frame|IDF]]—Intermediate Distribution Frame
* [[Intermediate Data Format|IDF]]—Intermediate Data Format
* [[IDL (programming language)|IDL]]—Interactive Data Language
* [[Interface description language|IDL]]—Interface Definition Language
* [[Identity Provider|IdP]]—Identity Provider (cybersecurity)
* [[Intrusion detection system|IDS]]—Intrusion Detection System
* [[Internet Explorer|IE]]—Internet Explorer
* [[International Electrotechnical Commission|IEC]]—International Electrotechnical Commission
* [[Institute of Electrical and Electronics Engineers|IEEE]]—Institute of Electrical and Electronics Engineers
* [[Internet Engineering Task Force|IETF]]—Internet Engineering Task Force
* [[Integrated Facility for Linux|IFL]]—Integrated Facility for Linux
* [[Internet Group Management Protocol|IGMP]]—Internet Group Management Protocol
* [[Interior Gateway Routing Protocol|IGRP]]—Interior Gateway Routing Protocol
* [[Independent hardware vendor|IHV]]—Independent Hardware Vendor
* [[General Inter-ORB Protocol|IIOP]]—Internet Inter-Orb Protocol
* [[Internet Information Services|IIS]]—Internet Information Services
* [[Internet Key Exchange|IKE]]—Internet Key Exchange
* [[Intermediate language|IL]]—Intermediate Language
* [[Instant messaging|IM]]—Instant Message or Instant Messaging
* [[Internet Message Access Protocol|IMAP]]—Internet Message Access Protocol
* [[Input method editor|IME]]—Input Method Editor
* [[Information security|INFOSEC]]—Information Systems Security
* [[Input/output|I/O]]—Input/output
* [[Internet of Things|IoT]]—Internet of Things
* [[Intellectual property|IP]]—Intellectual Property
* [[Internet Protocol|IP]]—Internet Protocol
* [[IP address management|IPAM]]—IP Address Management
* [[Inter-process communication|IPC]]—Inter-Process Communication
* [[Initial Program Load|IPL]]—Initial Program Load
* [[Intelligent Platform Management Interface|IPMI]]—Intelligent Platform Management Interface
* [[Interprocedural optimization|IPO]]—Inter Procedural Optimization
* [[Internet Printing Protocol|IPP]]—Internet Printing Protocol
* [[IPS panel|IPS]]—In-Plane Switching
* [[Instructions per second|IPS]]—Instructions Per Second
* [[Intrusion prevention system|IPS]]—Intrusion Prevention System
* [[IPsec]]—Internet Protocol security
* [[IPTV]]—Internet Protocol Television
* [[IPv4]]—Internet Protocol version 4
* [[IPv6]]—Internet Protocol version 6
* [[Internetwork Packet Exchange|IPX]]—Internetwork Packet Exchange
* [[Intermediate language|IR]]—Intermediate Representation
* [[Internet Relay Chat|IRC]]—Internet Relay Chat
* [[Infrared Data Association|IrDA]]—Infrared Data Association
* [[Internationalized Resource Identifier|IRI]]—Internationalized Resource Identifier 
* [[I/O request packet|IRP]]—I/O Request Packet
* [[Interrupt request|IRQ]]—Interrupt Request
* [[Information systems|IS]]—Information Systems
* [[IS-IS]]—Intermediate System to Intermediate System
* [[Industry Standard Architecture|ISA]]—Industry Standard Architecture
* [[Instruction set|ISA]]—Instruction Set Architecture
* [[ISAM]]—Indexed Sequential Access Method
* [[ISATAP]]—Intra-Site Automatic Tunnel Addressing Protocol
* [[Internet Storm Center|ISC]]—Internet Storm Center
* [[iSCSI]]—Internet Small Computer System Interface
* [[Integrated services digital network|ISDN]]—Integrated Services Digital Network
* [[International Organization for Standardization|ISO]]—International Organization for Standardization
* [[Internet Storage Name Service|iSNS]]—Internet Storage Name Service
* [[Internet service provider|ISP]]—Internet Service Provider
* [[ISPF]]—Interactive System Productivity Facility
* [[Interrupt handler|ISR]]—Interrupt Service Routine
* [[Independent software vendor|ISV]]—Independent Software Vendor
* [[Information technology|IT]]—Information Technology
* [[Information Technology Infrastructure Library|ITIL]]—Information Technology Infrastructure Library
* [[Interval temporal logic|ITL]]—Interval Temporal Logic
* [[International Telecommunication Union|ITU]]—International Telecommunication Union
* [[Interactive voice response|IVR(S)]]—Interactive Voice Response (System)
{{div col end}}

== J ==
{{div col|colwidth=22em}}
* [[Java Platform, Enterprise Edition|J2EE]]—Java 2 Enterprise Edition
* [[Java Platform, Micro Edition|J2ME]]—Java 2 Micro Edition
* [[Java Platform, Standard Edition|J2SE]]—Java 2 Standard Edition
* [[Java Architecture for XML Binding|JAXB]]—Java Architecture for XML Binding
* [[Jakarta XML RPC|JAX-RPC]]—Jakarta XML (formerly Java XML) for Remote Procedure Calls
* [[Java API for XML Processing|JAXP]]—Java API for XML Processing
* [[JBOD]]—Just a Bunch of Disks
* [[Java Cryptography Extension|JCE]]{{mdash}} Java Cryptography Extension
* [[Job Control Language|JCL]]—Job Control Language
* [[Java Community Process|JCP]]—Java Community Process
* [[Java Database Connectivity|JDBC]]—Java Database Connectivity
* [[Java Development Kit|JDK]]—Java Development Kit
* [[Java Platform, Enterprise Edition|JEE]]—Java Enterprise Edition
* [[Job Entry Subsystem 2/3|JES]]—Job Entry Subsystem
* [[Java Desktop System|JDS]]—Java Desktop System
* [[Java Foundation Classes|JFC]]—Java Foundation Classes
* [[JFET]]—Junction Field-Effect Transistor
* [[JFS (file system)|JFS]]—IBM Journaling File System
* [[Jini|JINI]]—Jini Is Not Initials
* [[Just-in-time compilation|JIT]]—Just-In-Time
* [[Java Platform, Micro Edition|JME]]—Java Micro Edition
* [[Java Management Extensions|JMX]]—Java Management Extensions
* [[Java Message Service|JMS]]—Java Message Service
* [[Java Naming and Directory Interface|JNDI]]—Java Naming and Directory Interface
* [[Java Native Interface|JNI]]—Java Native Interface
* [[Instruction set|JNZ]]—Jump non-zero
* [[JPEG]]—Joint Photographic Experts Group
* [[Java Runtime Environment|JRE]]—Java Runtime Environment
* [[JavaScript|JS]]—JavaScript
* [[Java Platform, Standard Edition|JSE]]—Java Standard Edition
* [[JSON]]—JavaScript Object Notation
* [[Jackson Structured Programming|JSP]]—Jackson Structured Programming
* [[JavaServer Pages|JSP]]—JavaServer Pages
* [[JTAG]]—Joint Test Action Group
* [[Java virtual machine|JVM]]—Java Virtual Machine
{{div col end}}

== K ==
{{div col|colwidth=22em}}
* [[The C Programming Language|K&R]]—Kernighan and Ritchie
* [[Kubernetes|K8s]]—Kubernetes
* [[Keyboard (computing)|KB]]—Keyboard
* [[Kilobit|Kb]]—Kilobit
* [[Kilobyte|KB]]—Kilobyte
* [[Knowledge base|KB]]—Knowledge Base
* [[Kilobits per second|Kbps]]—Kilobits per second
* [[Kibibyte|KiB]]—Kibibyte
* [[KDE]]—K Desktop Environment
* [[Kilohertz|kHz]]—Kilohertz
* [[KRL (programming language)|KRL]]—Knowledge Representation Language
* [[KVM switch|KVM]]—Keyboard, Video, Mouse
{{div col end}}

== L ==
{{div col|colwidth=22em}}
* [[Internationalization and localization|L10N]]—Localization
* [[Layer 2 Tunneling Protocol|L2TP]]—Layer two Tunneling Protocol
* [[Link Aggregation Control Protocol|LACP]]—Link Aggregation Control Protocol
* [[LAMP (software bundle)|LAMP]]—Linux Apache MySQL Perl
* [[LAMP (software bundle)|LAMP]]—Linux Apache MySQL PHP
* [[LAMP (software bundle)|LAMP]]—Linux Apache MySQL Python
* [[Local area network|LAN]]—Local Area Network
* [[Logical block addressing|LBA]]—Logical Block Addressing
* [[Load balancing (computing)|LB]]—Load Balancer
* [[Liquid crystal display|LCD]]—Liquid Crystal Display
* [[Least Cost Routing|LCR]]—Least Cost Routing
* [[Liquid crystal on silicon|LCOS]]—Liquid Crystal On Silicon
* [[Lightweight Directory Access Protocol|LDAP]]—Lightweight Directory Access Protocol
* [[Logical volume management|LE]]—Logical Extents
* [[Light-emitting diode|LED]]—Light-Emitting Diode
* [[Line feed|LF]]—Line Feed
* [[Low frequency|LF]]—Low Frequency
* [[Linux From Scratch|LFS]]—Linux From Scratch
* [[Land Grid Array|LGA]]—Land Grid Array
* [[GNU Lesser General Public License|LGPL]]—Lesser General Public License
* [[Library (computing)|LIB]]—LIBrary
* [[Low insertion force|LIF]]—Low Insertion Force
* [[LIFO (computing)|LIFO]]—Last In First Out
* [[LILO (boot loader)|LILO]]—Linux Loader
* LIP—Loop Initialization Primitive
* [[Lisp (programming language)|LISP]]—LISt Processing
* [[Linux kernel mailing list|LKML]]—Linux Kernel Mailing List
* [[LAN Manager|LM]]—Lan Manager
* [[Source lines of code|LOC]]—Lines of Code
* [[LPC (programming language)|LPC]]—Lars Pensjö C
* [[Linux Professional Institute|LPI]]—Linux Professional Institute
* [[Parallel port|LPT]]{{mdash}} Line Print Terminal
* [[Least Recently Used|LRU]]—Least Recently Used
* [[Least significant bit|LSB]]—Least Significant Bit
* [[Linux Standard Base|LSB]]—Linux Standard Base
* [[Large Scale Integration|LSI]]—Large-Scale Integration
* [[Long Term Evolution|LTE]]—Long Term Evolution
* [[Linear temporal logic|LTL]]—Linear Temporal Logic
* [[Bi-directional text|LTR]]—Left-to-Right
* [[Linux User Group|LUG]]—Linux User Group
* [[Logical Unit Number|LUN]]—Logical Unit Number
* [[Logical volume management|LV]]—Logical Volume
* [[Low-voltage differential signaling|LVD]]—Low Voltage Differential
* [[Logical volume management|LVM]]—Logical Volume Management
* [[Lempel–Ziv–Welch|LZW]]—Lempel-Ziv-Welch
{{div col end}}

== M ==
{{div col|colwidth=22em}}
* [[Mandatory access control|MAC]]—Mandatory Access Control
* [[Medium access control|MAC]]—Media Access Control
* [[Message authentication code|MAC]]—Message authentication code
* [[Mobile ad hoc network|MANET]]—Mobile Ad-Hoc Network
* [[Metropolitan area network|MAN]]—Metropolitan Area Network
* [[Messaging Application Programming Interface|MAPI]]—Messaging Application Programming Interface
* [[Multi-byte character set|MBCS]]—Multi Byte Character Set
* [[Model-based design|MBD]]—Model-Based Design
* [[Master boot record|MBR]]—Master Boot Record
* [[Megabit|Mb]]—Megabit
* [[Megabyte|MB]]—Megabyte
* [[Megabits per second|Mbps]]—Megabits per second
* [[Microsoft Certified Professional#Microsoft Certified Application Developer or M.C.A.D.|MCAD]]{{Broken anchor|date=2024-06-06|bot=User:Cewbot/log/20201008/configuration|target_link=Microsoft Certified Professional#Microsoft Certified Application Developer or M.C.A.D.|reason= }}—Microsoft Certified Application Developer
* [[Microsoft Certified Professional#Microsoft Certified Application Specialist or M.C.A.S.|MCAS]]{{Broken anchor|date=2024-06-06|bot=User:Cewbot/log/20201008/configuration|target_link=Microsoft Certified Professional#Microsoft Certified Application Specialist or M.C.A.S.|reason= }}—Microsoft Certified Application Specialist
* [[Micro Channel architecture|MCA]]—Micro Channel Architecture
* [[Microsoft Certified Professional|MCA]]—Microsoft Certified Architect
* [[MCDBA]]—Microsoft Certified DataBase Administrator
* [[Microsoft Certified Professional#Microsoft Certified Desktop Support Technician or M.C.D.S.T.|MCDST]]{{Broken anchor|date=2024-06-06|bot=User:Cewbot/log/20201008/configuration|target_link=Microsoft Certified Professional#Microsoft Certified Desktop Support Technician or M.C.D.S.T.|reason= }}—Microsoft Certified Desktop Support Technician
* [[Microsoft Certified Professional|MCITP]]—Microsoft Certified Information Technology Professional
* [[Microsoft Certified Professional|MCM]]—Microsoft Certified Master
* [[Microsoft Certified Professional|MCPD]]—Microsoft Certified Professional Developer
* [[Microsoft Certified Professional|MCP]]—Microsoft Certified Professional
* [[Microsoft Certified Professional#Microsoft Certified Systems Administrator or M.C.S.A.|MCSA]]{{Broken anchor|date=2024-06-06|bot=User:Cewbot/log/20201008/configuration|target_link=Microsoft Certified Professional#Microsoft Certified Systems Administrator or M.C.S.A.|reason= }}—Microsoft Certified Systems Administrator
* [[Microsoft Certified Professional#Microsoft Certified Solution Developer or M.C.S.D.|MCSD]]{{Broken anchor|date=2024-06-06|bot=User:Cewbot/log/20201008/configuration|target_link=Microsoft Certified Professional#Microsoft Certified Solution Developer or M.C.S.D.|reason= }}—Microsoft Certified Solution Developer
* [[Microsoft Certified Professional#Microsoft Certified Systems Engineer or M.C.S.E.|MCSE]]{{Broken anchor|date=2024-06-06|bot=User:Cewbot/log/20201008/configuration|target_link=Microsoft Certified Professional#Microsoft Certified Systems Engineer or M.C.S.E.|reason= }}—Microsoft Certified Systems Engineer
* [[Microsoft Certified Professional|MCTS]]—Microsoft Certified Technology Specialist
* [[Microsoft Certified Professional#Microsoft Certified Trainer or M.C.T.|MCT]]{{Broken anchor|date=2024-06-06|bot=User:Cewbot/log/20201008/configuration|target_link=Microsoft Certified Professional#Microsoft Certified Trainer or M.C.T.|reason= }}—Microsoft Certified Trainer
* [[IBM Monochrome Display Adapter|MDA]]—Monochrome Display Adapter
* [[Mail delivery agent|MDA]]—Mail Delivery Agent
* [[Model-driven architecture|MDA]]—Model-Driven Architecture
* [[Model-driven software development|MDD/MDSD]]—Model-Driven (Software) Development
* [[Main distribution frame|MDF]]—Main Distribution Frame
* [[Multiple-document interface|MDI]]—Multiple-Document Interface
* [[Master Data Management|MDM]]—Master Data Management
* [[Microsoft Edge|ME]]—Microsoft Edge
* [[Windows Me|ME]]—[Windows] Millennium Edition
* [[Multi-factor authentication |MFA]]—Multi-factor authentication
* [[Microsoft Foundation Class Library|MFC]]—Microsoft Foundation Classes
* [[Master File Table|MFT]]—Master File Table
* [[Modified Frequency Modulation|MFM]]—Modified Frequency Modulation
* [[Medium frequency|MF]]—Medium Frequency
* [[Media Gateway Control Protocol|MGCP]]—Media Gateway Control Protocol
* [[Megahertz|MHz]]—Megahertz
* [[Management information base|MIB]]—Management Information Base
* [[Magnetic ink character recognition|MICR]]—Magnetic Ink Character Recognition or Magnetic Ink Character Reader
* [[Musical Instrument Digital Interface|MIDI]]—Musical Instrument Digital Interface
* [[Multiple instruction, multiple data|MIMD]]—Multiple Instruction, Multiple Data
* [[MIME]]—Multipurpose Internet Mail Extensions
* [[MIMO]]—Multiple-Input Multiple-Output
* [[MINIX]]—MIni-uNIX
* [[MIPS architecture|MIPS]]—Microprocessor without Interlocked Pipeline Stages
* [[Million instructions per second|MIPS]]—Million Instructions Per Second
* [[Multiple instruction, single data|MISD]]—Multiple Instruction, Single Data
* [[Management information system|MIS]]—Management Information Systems
* [[Massachusetts Institute of Technology|MIT]]—Massachusetts Institute of Technology
* [[Machine Learning|ML]]—Machine Learning
* [[Microsoft Management Console|MMC]]—Microsoft Management Console
* [[Mortality Medical Data System|MMDS]]—Mortality Medical Data System
* [[Multichannel Multipoint Distribution Service|MMDS]]—Multichannel Multipoint Distribution Service
* [[Multi-mode optical fiber|MMF]]—Multi-Mode (optical) Fiber
* [[Memory-mapped I/O|MMIO]]—Memory-Mapped I/O
* [[Man-machine interface|MMI]]—Man Machine Interface.
* [[Massively multiplayer online role-playing game|MMORPG]]—Massively Multiplayer Online Role-Playing Game
* [[Multimedia Message Service|MMS]]—Multimedia Message Service
* [[Memory management unit|MMU]]—Memory Management Unit
* [[MMX (instruction set)|MMX]]—Multi-Media Extensions
* [[Multiple-image Network Graphics|MNG]]—Multiple-image Network Graphics
* [[Motherboard|MoBo]]—Motherboard
* [[Message-oriented middleware|MOM]]—Message-Oriented Middleware
* [[MOO]]—MUD Object Oriented
* [[Metaobject protocol|MOP]]—Meta-Object Protocol
* [[MOSFET]]—Metal-Oxide Semiconductor Field Effect Transistor
* [[Microsoft Certified Professional#Microsoft Office Specialist or M.O.S.|MOS]]{{Broken anchor|date=2024-06-06|bot=User:Cewbot/log/20201008/configuration|target_link=Microsoft Certified Professional#Microsoft Office Specialist or M.O.S.|reason= }}—Microsoft Office Specialist
* [[Motd (Unix)|MOTD]]—Message Of The Day
* [[Microsoft Certified Professional|MOUS]]—Microsoft Office User Specialist
* [[QuickTime File Format|MOV]]—Apple QuickTime Multimedia File
* [[Motion Picture Association of America|MPAA]]—Motion Picture Association of America
* [[Moving Picture Experts Group|MPEG]]—Motion Pictures Experts Group
* [[Multiprotocol Label Switching|MPLS]]—Multiprotocol Label Switching
* [[Mozilla Public License|MPL]]—Mozilla Public License
* [[Microprocessor|MPU]]—Microprocessor Unit
* [[MS-DOS]]—Microsoft DOS
* [[Mail submission agent|MSA]]—Mail Submission Agent
* [[Most significant bit|MSB]]—Most Significant Bit
* [[Microsoft Developer Network|MSDN]]—Microsoft Developer Network
* [[Integrated circuit#MSI|MSI]]—Medium-Scale Integration
* [[Message Signaled Interrupts|MSI]]—Message Signaled Interrupt
* [[Windows Installer|MSI]]—Microsoft Installer
* [[Microsoft Network|MSN]]—Microsoft Network
* [[Microsoft|MS]]—Microsoft
* [[USB flash drive|MS]]—Memory Stick
* [[Message transfer agent|MTA]]—Mail Transfer Agent
* [[Microsoft Certified Professional|MTA]]—Microsoft Technology Associate
* [[MTBF]]—Mean Time Between Failures
* [[Maximum transmission unit|MTU]]—Maximum Transmission Unit
* [[Machine translation|MT]]—Machine Translation
* [[Mail User Agent|MUA]]—Mail User Agent
* [[Multi-user dungeon|MUD]]—Multi-User Dungeon
* [[Computer memory|MU]]—Memory Unit
* [[Model–view–controller|MVC]]—Model-View-Controller
* [[Microsoft Most Valuable Professional|MVP]]—Most Valuable Professional
* [[MVS]]—Multiple Virtual Storage
* [[Mobile World Congress|MWC]]—Mobile World Congress
* [[Material Exchange Format|MXF]]—Material Exchange Format
* [[MX record|MX]]—Mail exchange
{{div col end}}

== N ==
{{div col|colwidth=22em}}
* [[Network access control|NAC]]—Network Access Control
* [[Negative-acknowledge character|NACK]]—Negative ACKnowledgement
* [[Negative-acknowledge character|NAK]]—Negative AcKnowledge Character
* [[NaN]]—Not a Number
* [[Network Access Protection|NAP]]—Network Access Protection
* [[Network-attached storage|NAS]]—Network-Attached Storage
* [[Netwide Assembler|NASM]]—Netwide ASseMbler
* [[Network address translation|NAT]]—Network Address Translation
* [[NetWare Core Protocol|NCP]]—NetWare Core Protocol
* [[Native Command Queuing|NCQ]]—Native Command Queuing
* [[National Center for Supercomputing Applications|NCSA]]—National Center for Supercomputing Applications
* [[Network Driver Interface Specification|NDIS]]—Network Driver Interface Specification
* [[Novell Embedded Systems Technology|NDPS]]—Novell Distributed Print Services
* [[Novell Directory Services|NDS]]—Novell Directory Services
* [[Network Equipment Provider|NEP]]—Network Equipment Provider
* [[NetBIOS]]—Network Basic Input/Output System
* [[NetBIOS over TCP/IP|NetBT]]—NetBIOS over TCP/IP
* [[Near-end crosstalk|NEXT]]—Near-End CrossTalk
* [[Nondeterministic finite automaton|NFA]]—Nondeterministic Finite Automaton
* [[Near-field communication|NFC]]—Near-field communication
* [[Network File System (protocol)|NFS]]—Network File System
* NGL—aNGeL
* [[Next-Generation Secure Computing Base|NGSCB]]—Next-Generation Secure Computing Base
* [[National Instruments|NI]]—National Instruments
* [[Network interface controller|NIC]]—Network Interface Controller or Network Interface Card
* [[No Internal Message|NIM]]—No Internal Message
* [[Non-blocking I/O (Java)|NIO]]—Non-blocking I/O
* [[National Institute of Standards and Technology|NIST]]—National Institute of Standards and Technology
* [[Non-linear editing system|NLE]]—Non-Linear Editing system
* [[Natural language processing|NLP]]—Natural Language Processing
* [[Internationalization and localization|NLS]]—Native Language Support
* [[Non-maskable interrupt|NMI]]—Non-Maskable Interrupt
* [[Network News Transfer Protocol|NNTP]]—Network News Transfer Protocol
* [[Network operations center|NOC]]—Network Operations Center
* [[NOP (code)|NOP]]—No OPeration
* [[Network operating system|NOS]]—Network Operating System
* [[NP (complexity)|NP]]—Nondeterministic Polynomial time
* [[Netscape Public License|NPL]]—Netscape Public License
* [[Native POSIX Thread Library|NPTL]]—Native POSIX Thread Library
* [[Network Processing Unit|NPU]]—Network Processing Unit
* [[Netscape|NS]]—Netscape
* [[Nullsoft Scriptable Install System|NSIS]]—Nullsoft Scriptable Install System
* [[Netscape Portable Runtime|NSPR]]—Netscape Portable Runtime
* [[Novell Storage Services|NSS]]—Novell Storage Service
* [[Network Security Services|NSS]]—Network Security Services
* [[Name Service Switch|NSS]]—Name Service Switch
* [[Windows NT|NT]]—New Technology
* [[NTFS]]—NT Filesystem
* [[NTLM]]—NT Lan Manager
* [[Network Time Protocol|NTP]]—Network Time Protocol
* [[Non-Uniform Memory Access|NUMA]]—Non-Uniform Memory Access
* [[Non-uniform rational B-spline|NURBS]]—Non-Uniform Rational B-Spline
* [[Network Video Recorder|NVR]]—Network Video Recorder
* [[Non-volatile random-access memory|NVRAM]]—Non-Volatile Random-Access Memory
{{div col end}}

== O ==
{{div col|colwidth=22em}}
* [[OASIS (organization)|OASIS]]—Organization for the Advancement of Structured Information Standards
* [[Operational Acceptance Testing|OAT]]—Operational Acceptance Testing
* [[OBSAI]]—Open Base Station Architecture Initiative
* [[Optical Character Recognition|OCR]]—Optical Character Recognition
* [[Open Database Connectivity|ODBC]]—Open Database Connectivity
* [[Original equipment manufacturer|OEM]]—Original Equipment Manufacturer
* [[Open Enterprise Server|OES]]—Open Enterprise Server
* [[Orthogonal frequency-division multiplexing|OFDM]]—Orthogonal Frequency-Division Multiplexing
* [[Open and Free Technology Community|OFTC]]—Open and Free Technology Community
* [[Object identifier|OID]]—Object Identifier
* [[Online analytical processing|OLAP]]—Online Analytical Processing
* [[Object Linking and Embedding|OLE]]—Object Linking and Embedding
* [[Organic light-emitting diode|OLED]]—Organic Light Emitting Diode
* [[One Laptop per Child|OLPC]]—One Laptop per Child
* [[Online transaction processing|OLTP]]—Online Transaction Processing
* [[Relocatable Object Module Format|OMF]]—Object Module Format
* [[Object Management Group|OMG]]—Object Management Group
* [[Optical Mark Recognition|OMR]]—Optical Mark Reader
* [[Object-oriented programming|OO]]—Object-Oriented
* [[OpenOffice.org|OO]]—OpenOffice
* [[Out-of-order execution|OOE]]—Out-of-Order Execution
* [[Out of memory|OOM]]—Out Of Memory
* [[OpenOffice.org|OOo]]—OpenOffice.org
* [[Out-of-order execution|OoOE]]—Out-of-Order Execution
* [[Object-oriented programming|OOP]]—Object-Oriented Programming
* [[Out of the box (feature)|OOTB]]—Out of the box
* [[OPML]]—Outline Processor Markup Language
* [[Object request broker|ORB]]—Object Request Broker
* [[Object–relational mapping|ORM]]—Object–Relational Mapping
* [[Open-source software|OS]]—Open Source
* [[Operating system|OS]]—Operating System
* [[O'Reilly Open Source Convention|OSCON]]—O'Reilly Open Source CONvention
* [[OSDN]]—Open Source Development Network
* [[Open Source Initiative|OSI]]—Open Source Initiative
* [[Open Systems Interconnection|OSI]]—Open Systems Interconnection
* [[Open Shortest Path First|OSPF]]—Open Shortest Path First
* [[Open Sound System|OSS]]—Open Sound System
* [[Open source software|OSS]]—Open-Source Software
* [[Operations support system|OSS]]—Operations Support System
* [[Open Source Technology Group|OSTG]]—Open Source Technology Group
* [[One-time password|OTP]]—One-time password
* [[Organizationally Unique Identifier|OUI]]—Organizationally Unique Identifier
{{div col end}}

== P ==
{{div col|colwidth=22em}}
* [[Peer-to-peer|P2P]]—Peer-To-Peer
* [[Platform as a service|PaaS]]—Platform as a Service
* [[Privileged Access Management|PAM]]—Privileged Access Management
* [[Personal area network|PAN]]—Personal Area Network
* [[Password authentication protocol|PAP]]—Password Authentication Protocol
* [[PARC (company)|PARC]]—Palo Alto Research Center
* [[Parallel ATA|PATA]]—Parallel ATA
* [[Portable Batch System|PBS]]—Portable Batch System
* [[Personal computer|PC]]—Personal Computer
* [[Printed circuit board|PCB]]—Printed Circuit Board
* [[Process control block|PCB]]—Process Control Block
* [[IBM PC DOS|PC DOS]]—Personal Computer Disc Operating System
* [[Peripheral Component Interconnect|PCI]]—Peripheral Component Interconnect
* [[PCI Express|PCIe]]—PCI Express
* [[PCI Extended|PCI-X]]—PCI Extended
* [[Printer Command Language|PCL]]—Printer Command Language
* [[Personal Computer Memory Card International Association|PCMCIA]]—Personal Computer Memory Card International Association
* [[Pulse-code modulation|PCM]]—Pulse-Code Modulation
* [[Perl Compatible Regular Expressions|PCRE]]—Perl Compatible Regular Expressions
* [[Public domain|PD]]—Public Domain
* [[Personal digital assistant|PDA]]—Personal Digital Assistant
* [[Portable Document Format|PDF]]—Portable Document Format
* [[Plesiochronous Digital Hierarchy|PDH]]—Plesiochronous Digital Hierarchy
* [[Programmed Data Processor|PDP]]—Programmed Data Processor
* [[Logical volume management|PE]]—Physical Extents
* [[Portable Executable|PE]]—Portable Executable
* [[Perl|PERL]]—Practical Extraction and Reporting Language
* [[Please Find Atachment|PFA]]—Please Find Attachment
* [[Peripheral Gateway|PG]]—Peripheral Gateway
* [[Pin grid array|PGA]]—Pin Grid Array
* [[Field-programmable gate array|PGA]]—Programmable Gate Array
* [[Profile-guided optimization|PGO]]—Profile-Guided Optimization
* [[Pretty Good Privacy|PGP]]—Pretty Good Privacy
* [[PHP]]—Hypertext Preprocessor
* [[PIC microcontroller|PIC]]—Peripheral Interface Controller
* [[Programmable Interrupt Controller|PIC]]—Programmable Interrupt Controller
* [[PID controller|PID]]—Proportional-Integral-Derivative
* [[Process identifier|PID]]—Process ID
* [[Personal information manager|PIM]]—Personal Information Manager
* [[Pine (e-mail client)|PINE]]—Program for Internet News and Email
* [[Packet Internet Gopher|PING]]—Packet Internet Gopher
* [[Programmed input/output|PIO]]—Programmed Input/Output
* [[Pixel]]—Picture element
* [[PKCS]]—Public Key Cryptography Standards
* [[Public key infrastructure|PKI]]—Public Key Infrastructure
* [[Power line communication|PLC]]—Power Line Communication
* [[Programmable logic controller|PLC]]—Programmable Logic Controller
* [[Programmable logic device|PLD]]—Programmable Logic Device
* [[PL/I]]—Programming Language One
* [[PL/M]]—Programming Language for Microcomputers
* [[PL/P]]—Programming Language for Prime
* [[Power line communication|PLT]]—Power Line Telecommunications
* [[Power-on self-test|PMM]]—POST Memory Manager
* [[Portable Network Graphics|PNG]]—Portable Network Graphics
* [[Plug and play|PnP]]—Plug-and-Play
* [[Peer Name Resolution Protocol|PNRP]]—Peer Name Resolution Protocol
* [[Power over Ethernet|PoE]]—Power over Ethernet
* [[Point of Sale|PoS]]—Point of Sale
* [[Plain Old Class Object|POCO]]—Plain Old Class Object
* [[Persistent Object Identifier|POID]]—Persistent Object Identifier
* [[Plain Old Java Object|POJO]]—Plain Old Java Object
* [[Point of presence|POP]]—Point of Presence
* [[Post Office Protocol|POP3]]—Post Office Protocol v3
* [[POSIX]]—Portable Operating System Interface, formerly IEEE-IX
* [[Power-on self-test|POST]]—Power-On Self Test
* [[PowerPC|PPC]]—PowerPC
* [[Pixels per inch|PPI]]—Pixels Per Inch
* [[Pages Per Minute|PPM]]—Pages Per Minute
* [[Point-to-Point Protocol|PPP]]—Point-to-Point Protocol
* [[Point-to-Point Protocol over ATM|PPPoA]]—PPP over ATM
* [[Point-to-Point Protocol over Ethernet|PPPoE]]—PPP over Ethernet
* [[Point-to-point tunneling protocol|PPTP]]—Point-to-Point Tunneling Protocol
* [[Pull request|PR]]—Pull Request
* [[Programmable ROM|PROM]]—Programmable Read-Only Memory
* [[PostScript|PS]]—PostScript
* [[IBM Personal System/2|PS/2]]—Personal System/2
* [[Professional Services Automation|PSA]]—Professional Services Automation
* [[Platform Specific Model|PSM]]—Platform Specific Model
* [[Public Switched Telephone Network|PSTN]]—Public Switched Telephone Network
* [[Power supply|PSU]]—Power Supply Unit
* [[PSVI]]—Post-Schema-Validation Infoset
* [[PTS-DOS]]—PhysTechSoft – Disk Operating System
* [[Logical volume management|PV]]—Physical Volume
* [[Logical volume management|PVG]]—Physical Volume Group
* [[Personal video recorder|PVR]]—Personal Video Recorder
* [[Preboot Execution Environment|PXE]]—Preboot Execution Environment
* [[PCI eXtensions for Instrumentation|PXI]]—PCI eXtensions for Instrumentation
* [[Procedure Remote Call|PRC]]—Procedure Remote Call
{{div col end}}

== Q ==
{{div col|colwidth=22em}}
* [[Quad Data Rate SRAM|QDR]]—Quad Data Rate
* [[Quality control|QA]]—Quality Assurance
* [[Quad Flat Package|QFP]]—Quad Flat Package
* [[Quality of service|QoS]]—Quality of Service
* [[QOTD]]—Quote of the Day
* [[Qt (software)|Qt]]—Quasar Toolkit{{cn|date=May 2023}}
* [[Queued teleprocessing access method|QTAM]]—Queued Teleprocessing Access Method
* [[Quarter Small Outline Package|QSOP]]—Quarter Small Outline Package
* [[Quality Windows Audio/Video Experience|qWave]]—Quality Windows Audio/Video Experience
{{div col end}}

== R ==
{{div col|colwidth=22em}}
* [[RACF]]—Resource Access Control Facility
* [[Rapid application development|RAD]]—Rapid Application Development
* [[RADIUS]]—Remote Authentication Dial In User Service
* [[RAID]]—Redundant Array of Independent Disks
* [[Resource Acquisition Is Initialization|RAII]]—Resource Acquisition Is Initialization
* [[RAID|RAIT]]—Redundant Array of Inexpensive Tapes
* [[Random-access memory|RAM]]—Random-Access Memory
* [[Reverse Address Resolution Protocol|RARP]]—Reverse Address Resolution Protocol
* [[Reliability, availability and serviceability (computer hardware)|RAS]]—Reliability, Availability and Serviceability
* [[remote access service|RAS]]—Remote access service
* [[DVD region code|RC]]—Region Code
* [[Release Candidate|RC]]—Release Candidate
* [[Run commands|RC]]—Run Commands
* [[Root Cause Analysis|RCA]]—Root Cause Analysis
* [[Revision Control System|RCS]]—Revision Control System
* [[Remote desktop software|RD]]—Remote Desktop
* [[remove directory|rd]]—remove directory
* [[Relational database management system|RDBMS]]—Relational Database Management System
* [[Remote Desktop Connection|RDC]]—Remote Desktop Connection
* [[Resource Description Framework|RDF]]—Resource Description Framework
* [[Relational data model|RDM]]—Relational Data Model
* [[RTOS|RDOS]]—Real-time Disk Operating System
* [[Remote Desktop Protocol|RDP]]—Remote Desktop Protocol
* [[Remote Data Services|RDS]]—Remote Data Services
* [[Refal|REFAL]]—Recursive Functions Algorithmic Language
* REP—RAID Error Propagation
* [[Representational State Transfer|REST]]—Representational State Transfer
* RESV—Reservation Message
* [[Regular expression|regex]]—Regular Expression
* [[Regular expression|regexp]]—Regular Expression
* [[Radio frequency|RF]]—Radio Frequency
* [[Request for Comments|RFC]]—Request For Comments
* [[Radio frequency interference|RFI]]—Radio Frequency Interference
* [[Radio-frequency identification|RFID]]—Radio Frequency Identification
* [[RGB color model|RGB]]—Red, Green, Blue
* RGBA—Red, Green, Blue, Alpha
* [[Red Hat Linux|RHL]]—Red Hat Linux
* [[Red Hat Enterprise Linux|RHEL]]—Red Hat Enterprise Linux
* [[Rich Internet application|RIA]]—Rich Internet Application
* [[Recording Industry Association of America|RIAA]]—Recording Industry Association of America
* [[Raster image processor|RIP]]—Raster Image Processor
* [[Routing Information Protocol|RIP]]—Routing Information Protocol
* [[Regional Internet registry|RIR]]—Regional Internet registry
* [[Reduced instruction set computer|RISC]]—Reduced Instruction Set Computer
* [[RISC OS]]—Reduced Instruction Set Computer Operating System
* [[Remote job entry|RJE]]—Remote Job Entry
* [[Run-length encoding|RLE]]—Run-Length Encoding
* [[Run-length limited|RLL]]—Run-Length Limited
* [[rmdir]]—remove directory
* [[Java remote method invocation|RMI]]—Remote Method Invocation
* [[Richard Stallman|RMS]]—Richard Matthew Stallman
* [[Read-only memory|ROM]]—Read-Only Memory
* [[S-LINK|ROMB]]—Read-Out Motherboard
* [[ROM-DOS]]—Read-Only Memory – Disk Operating System
* [[Robotic Process Automation|RPA]]—Robotic Process Automation
* [[Remote procedure call|RPC]]—Remote Procedure Call
* [[IBM RPG|RPG]]—Report Program Generator
* [[RPM Package Manager|RPM]]—RPM Package Manager
* [[Routing and Remote Access Service|RRAS]]—Routing and Remote Access Service
* [[RSA (algorithm)|RSA]]—Rivest Shamir Adleman
* [[Repetitive strain injury|RSI]]—Repetitive Strain Injury
* [[Radio Service Software|RSS]]—Radio Service Software
* [[RSS]]—Rich Site Summary, RDF Site Summary, or Really Simple Syndication
* [[RSVP]]—Resource Reservation Protocol
* [[RTAI]]—Real-Time Application Interface
* [[Real-time clock|RTC]]—Real-Time Clock
* [[Real-time business intelligence|RTE]]—Real-Time Enterprise
* [[RTEMS]]—Real-Time Executive for Multiprocessor Systems
* [[Rich Text Format|RTF]]—Rich Text Format
* [[Bi-directional text|RTL]]—Right-to-Left
* [[Real-time messaging protocol|RTMP]]—Real Time Messaging Protocol
* [[Real-time operating system|RTOS]]—Real-Time Operating System
* [[Real-time Transport Protocol|RTP]]—Real-time Transport Protocol
* [[Flow control (data)|RTS]]—Ready To Send
* [[Real Time Streaming Protocol|RTSP]]—Real Time Streaming Protocol
* [[Run-time type information|RTTI]]—Run-time Type Information
* [[Remote terminal unit|RTU]]—Remote Terminal Unit
* [[Responsive Web Design|RWD]]—Responsive Web Design
{{div col end}}

== S ==
{{div col|colwidth=22em}}
* [[Software as a service|SaaS]]—Software as a Service
* [[Sass (stylesheet language)|SASS]]—Syntactically Awesome Style Sheets
* [[Security Account Manager|SAM]]—Security Account Manager
* [[Storage area network|SAN]]—Storage Area Network
* [[Serial attached SCSI|SAS]]—Serial attached SCSI
* [[Serial ATA|SATA]]—Serial ATA
* [[Simple API for XML|SAX]]—Simple API for XML
* [[Spinning beachball of death|SBOD]]—Spinning Beachball of Death
* [[Serial Bus Protocol 2|SBP-2]]—Serial Bus Protocol 2
* [[sbin]]—superuser binary
* [[Windows Small Business Server|sbs]]—Small Business Server
* [[Standard Build Unit|SBU]]—Standard Build Unit
* [[SCADA]]—Supervisory Control And Data Acquisition
* [[Source Code in Database|SCID]]—Source Code in Database
* [[Software configuration management|SCM]]—Software Configuration Management
* [[Revision control|SCM]]—Source Code Management
* [[Secure copy|SCP]]—Secure Copy
* [[Single channel per carrier|SCPC]]—Single Channel Per Carrier
* [[Standard Commands for Programmable Instruments|SCPI]]—Standard Commands for Programmable Instrumentation
* [[Secure Content Storage Association|SCSA]]—Secure Content Storage Association
* [[SCSI]]—Small Computer System Interface
* [[Stream Control Transmission Protocol|SCTP]]—Stream Control Transmission Protocol
* [[Secure Digital|SD]]—Secure Digital
* [[SDDL]]—Security Descriptor Definition Language
* [[Synchronous Digital Hierarchy|SDH]]—Synchronous Digital Hierarchy
* [[Single-document interface|SDI]]—Single-Document Interface
* [[Single Edge Contact|SEC]]—Single Edge Contact
* [[Secure Digital|SDIO]]—Secure Digital Input Output
* [[Software development kit|SDK]]—Software Development Kit
* [[Simple DirectMedia Layer|SDL]]—Simple DirectMedia Layer
* [[Service Delivery|SDN]]—Service Delivery Network
* [[Session Description Protocol|SDP]]—Session Description Protocol
* [[Software-defined radio|SDR]]—Software-Defined Radio
* [[Synchronous dynamic random-access memory|SDRAM]]—Synchronous Dynamic Random-Access Memory
* [[Symmetric digital subscriber line|SDSL]]—Symmetric DSL
* [[Single-ended signalling|SE]]—Single Ended
* [[Software Engineering Institute|SEI]]—Software Engineering Institute
* [[Search engine optimization|SEO]]—Search Engine Optimization
* [[FTP over SSH|SFTP]]—Secure FTP
* [[Simple File Transfer Protocol|SFTP]]—Simple File Transfer Protocol
* [[SSH file transfer protocol|SFTP]]—SSH File Transfer Protocol
* [[Silicon Graphics|SGI]]—Silicon Graphics, Incorporated
* [[Standard Generalized Markup Language|SGML]]—Standard Generalized Markup Language
* [[ANSI escape code#SGR (Select Graphic Rendition) parameters|SGR]]—Select Graphic Rendition
* [[Secure Hash Algorithm|SHA]]—Secure Hash Algorithm
* [[Single-pair high-speed digital subscriber line|SHDSL]]—Single-pair High-speed Digital Subscriber Line
* [[Security information and event management|SIEM]]—Security information and event management
* [[SIGCAT]]—Special Interest Group on CD-ROM Applications and Technology
* [[SIGGRAPH]]—Special Interest Group on Graphics
* [[Single instruction, multiple data|SIMD]]—Single Instruction, Multiple Data
* [[SIM card|SIM]]—Subscriber Identification Module
* [[SIMM]]—Single Inline Memory Module
* [[Session Initiation Protocol|SIP]]—Session Initiation Protocol
* [[Supplementary Ideographic Plane|SIP]]—Supplementary Ideographic Plane
* [[Single instruction, single data|SISD]]—Single Instruction, Single Data
* [[Single-Input and Single-Output|SISO]]—Single-Input and Single-Output
* [[Service Level Agreement|SLA]]—Service Level Agreement
* [[SUSE Linux Enterprise Desktop|SLED]]—SUSE Linux Enterprise Desktop
* [[SUSE Linux Enterprise Server|SLES]]—SUSE Linux Enterprise Server
* [[Scalable Link Interface|SLI]]—Scalable Link Interface
* [[Serial Line Internet Protocol|SLIP]]—Serial Line Internet Protocol
* [[Service Level Management|SLM]]—Service Level Management
* [[Source lines of code|SLOC]]—Source Lines of Code
* [[Subject-matter expert|SME]]—Subject Matter Expert
* [[Single-mode optical fiber|SMF]]—Single-Mode (optical) Fiber
* [[Software project management|SPM]]—Software project management
* [[SPMD]]—Single Program, Multiple Data
* [[Single_point_of_failure|SPOF]]—Single point of failure
* [[SMA connector|SMA]]—SubMiniature version A
* [[Server Message Block|SMB]]—Server Message Block
* [[System Management BIOS|SMBIOS]]—System Management BIOS
* [[Synchronized Multimedia Integration Language|SMIL]]—Synchronized Multimedia Integration Language
* [[S/MIME]]—Secure/Multipurpose Internet Mail Extensions
* [[Supplementary Multilingual Plane|SMP]]—Supplementary Multilingual Plane
* [[Symmetric multiprocessing|SMP]]—Symmetric Multi-Processing
* [[Switched-mode power supply|SMPS]]—Switch Mode Power Supply
* [[SMS]]—Short Message Service
* [[System Management Server|SMS]]—System Management Server
* [[Simultaneous multithreading|SMT]]—Simultaneous Multithreading
* [[Simple Mail Transfer Protocol|SMTP]]—Simple Mail Transfer Protocol
* [[Systems Network Architecture|SNA]]—Systems Network Architecture
* [[Simple Network Management Protocol|SNMP]]—Simple Network Management Protocol
* [[SNTP]]—Simple Network Time Protocol
* [[Service-oriented architecture|SOA]]—Service-Oriented Architecture
* [[SOAP]]—Simple Object Access Protocol
* [[Symbolic Optimal Assembly Program|SOAP]]—Symbolic Optimal Assembly Program
* [[Stop Online Piracy Act|SOPA]]—Stop Online Piracy Act
* [[System-on-a-chip|SoC]]—System-on-a-Chip
* [[SO-DIMM]]—Small Outline DIMM
* [[Standard Operating Environment|SOE]]—Standard Operating Environment
* [[Small office/home office|SOHO]]—Small Office/Home Office
* [[Silicon on insulator|SOI]]—Silicon On Insulator
* [[SOLID]]—'''S'''ingle-responsibility, '''O'''pen-closed, '''L'''iskov substitution, '''I'''nterface segregation, '''D'''ependency Inversion
* [[Service pack|SP]]—Service Pack
* [[Single-page application|SPA]]—Single Page Application
* [[Sender Policy Framework|SPF]]—Sender Policy Framework
* [[Serial Peripheral Interface Bus|SPI]]—Serial Peripheral Interface
* [[Stateful Packet Inspection|SPI]]—Stateful Packet Inspection
* [[SPARC]]—Scalable Processor Architecture
* [[SQL]]—Structured Query Language
* [[Static random-access memory|SRAM]]—Static Random-Access Memory
* [[Static single assignment form|SSA]]—Static Single Assignment
* [[V-Model (software development)|SSD]]—Software Specification Document
* [[Solid-state drive|SSD]]—Solid-State Drive
* [[Simple Service Discovery Protocol|SSDP]]—Simple Service Discovery Protocol
* [[Streaming SIMD Extensions|SSE]]—Streaming SIMD Extensions
* [[Secure Shell|SSH]]—Secure Shell
* [[Server Side Includes|SSI]]—Server Side Includes
* [[Single-system image|SSI]]—Single-System Image
* [[Small Scale Integration|SSI]]—Small-Scale Integration
* [[Service set (802.11 network)|SSID]]—Service Set Identifier
* [[Secure Sockets Layer|SSL]]—Secure Socket Layer
* [[Single Sign On|SSO]]—Single Sign On
* [[Supplementary Special-purpose Plane|SSP]]—Supplementary Special-purpose Plane
* SSR—Server Side Rendering
* [[Streaming SIMD Extensions|SSSE]]—Supplementary Streaming SIMD Extensions
* [[Shortest Path Problem #Single-source shortest paths|SSSP]]—Single Source Shortest Path
* [[Secure Socket Tunneling Protocol|SSTP]]—Secure Socket Tunneling Protocol
* [[su (Unix)|su]]—superuser
* [[Single UNIX Specification|SUS]]—Single UNIX Specification
* [[SUSE Linux|SUSE]]—Software und System-Entwicklung
* [[Scalable Video Coding|SVC]]—Scalable Video Coding
* [[Scalable Vector Graphics|SVG]]—Scalable Vector Graphics
* [[Super Video Graphics Array|SVGA]]—Super Video Graphics Array
* [[Structured VLSI design|SVD]]—Structured VLSI Design
* [[Adobe Flash|SWF]]—Shock Wave Flash
* [[Standard Widget Toolkit|SWT]]—Standard Widget Toolkit
* [[Sysop]]—System operator
{{div col end}}

== T ==
{{div col|colwidth=22em}}
* [[Optical disc recording modes|TAO]]—Track-At-Once
* [[Telephony Application Programming Interface|TAPI]]—Telephony Application Programming Interface
* [[Turbo Assembler|TASM]]—Turbo ASseMbler
* [[Terabyte|TB]]—TeraByte
* [[Tcl]]—Tool Command Language
* [[Transmission Control Protocol|TCP]]—Transmission Control Protocol
* [[Internet Protocol Suite|TCP/IP]]—Transmission Control Protocol/Internet Protocol
* [[Telecommunication Control Unit|TCU]]—Telecommunication Control Unit
* [[Time-division multiple access|TDMA]]—Time-Division Multiple Access
* [[Thermal Design Power|TDP]]—Thermal Design Power
* [[Thin-film transistor|TFT]]—Thin-Film Transistor
* [[TFTP]]—Trivial File Transfer Protocol
* [[Texas Instruments|TI]]—Texas Instruments
* [[TIFF]]—Tagged Image File Format
* [[Three-letter acronym|TLA]]—Three-Letter Acronym
* [[Top-level domain|TLD]]—Top-Level Domain
* [[Thread-local storage|TLS]]—Thread-Local Storage
* [[Transport Layer Security|TLS]]—Transport Layer Security
* [[Type–length–value|TLV]]—Type—length—value
* [[/var/run|tmp]]—temporary
* [[Terminal node controller|TNC]]—Terminal Node Controller
* [[TNC connector|TNC]]—Threaded Neill-Concelman connector
* [[Transaction Processing Facility|TPF]]—Transaction Processing Facility
* [[Trusted Platform Module|TPM]]—Trusted Platform Module
* [[TRON command|TROFF]]—Trace Off
* [[TRON command|TRON]]—Trace On
* [[TRON Project|TRON]]—The Real-time Operating system Nucleus
* [[TRSDOS]]—Tandy Radio Shack – Disk Operating System
* [[Time Sharing Option|TSO]]—Time Sharing Option
* [[Travelling salesman problem|TSP]]—Traveling Salesman Problem
* [[Terminate-and-stay-resident program|TSR]]—Terminate and Stay Resident
* TTA—True Tap Audio
* [[TrueType|TTF]]—TrueType Font
* [[Transistor–transistor logic|TTL]]—Transistor—Transistor Logic
* [[Time to live|TTL]]—Time To Live
* [[Speech synthesis|TTS]]—Text-to-Speech
* [[Computer terminal|TTY]]—Teletype
* [[Tucows|TUCOWS]]—The Ultimate Collection of Winsock Software
* [[TeX Users Group#Community|TUG]]—TeX Users Group
* [[TWAIN]]—Technology Without An Interesting Name
{{div col end}}

== U ==
{{div col|colwidth=22em}}
* [[UAAG]]—User Agent Accessibility Guidelines
* [[User Account Control|UAC]]—User Account Control
* [[Universal asynchronous receiver/transmitter|UART]]—Universal Asynchronous Receiver/Transmitter
* [[User Acceptance Testing|UAT]]—User Acceptance Testing
* [[Undefined behavior|UB]]—Undefined Behavior
* [[Universal Character Set|UCS]]—Universal Character Set
* [[Universal Description Discovery and Integration|UDDI]]—Universal Description, Discovery, and Integration
* [[UDMA]]—Ultra DMA
* [[User Datagram Protocol|UDP]]—User Datagram Protocol
* [[UEFI]]—Unified Extensible Firmware Interface
* [[Ultra high frequency|UHF]]—Ultra High Frequency
* [[User interface|UI]]—User Interface
* [[Upload|UL]]—Upload
* [[Gate array|ULA]]—Uncommitted Logic Array
* [[Ultra Large Scale Integration|ULSI]]—Ultra Large Scale Integration
* [[Upper memory area|UMA]]—Upper Memory Area
* [[Upper memory area|UMB]]—Upper Memory Block
* [[Unified Modeling Language|UML]]—Unified Modeling Language
* [[User-mode Linux|UML]]—User-Mode Linux
* [[Ultra-Mobile PC|UMPC]]—Ultra-Mobile Personal Computer
* [[Universal Mobile Telecommunications System |UMTS]]—Universal Mobile Telecommunications System 
* [[Universal Naming Convention|UNC]]—Universal Naming Convention
* [[UNIVAC]]—Universal Automatic Computer (By MKS)
* [[Uninterruptible power supply|UPS]]—Uninterruptible Power Supply or Uninterrupted Power Supply
* [[Uniform Resource Identifier|URI]]—Uniform Resource Identifier
* [[Uniform Resource Locator|URL]]—Uniform Resource Locator
* [[Uniform Resource Name|URN]]—Uniform Resource Name
* [[Universal Serial Bus|USB]]—Universal Serial Bus
* [[:/usr|usr]]—User System Resources
* [[U.S. Robotics|USR]]—U.S. Robotics
* [[Coordinated Universal Time|UTC]]—Coordinated Universal Time
* [[Unicode|UTF]]—Unicode Transformation Format
* [[Unshielded twisted pair|UTP]]—Unshielded Twisted Pair
* [[UMTS Terrestrial Radio Access Network|UTRAN]]—Universal Terrestrial Radio Access Network
* [[UUCP]]—Unix to Unix Copy
* [[Universally Unique Identifier|UUID]]—Universally Unique Identifier
* [[Universal User Name|UUN]]—Universal User Name
* [[Universal Virtual Computer|UVC]]—Universal Virtual Computer
* [[Universal Windows Platform|UWP]]—Universal Windows Platform
* [[User experience design|UX]]—User Experience
{{div col end}}

== V ==
{{div col|colwidth=22em}}
* [[Filesystem Hierarchy Standard|var]]—variable
* [[VoLTE]]—Voice Over Long Term Evolution
* [[VAX]]—Virtual Address eXtension
* [[DOS Protected Mode Interface|VCPI]]—Virtual Control Program Interface
* [[Visual Basic|VB]]—Visual Basic
* [[Visual Basic for Applications|VBA]]—Visual Basic for Applications
* [[VBScript|VBS]]—Visual Basic Script
* [[Desktop virtualization|VDI]]—Virtual Desktop Infrastructure
* [[Visual Display Unit|VDU]]—Visual Display Unit
* [[Virtual DOS machine|VDM]]—Virtual DOS machine
* [[VDSL]]—Very High Bitrate Digital Subscriber Line
* [[VESA]]—Video Electronics Standards Association
* [[File Allocation Table|VFAT]]—Virtual FAT
* [[Virtual Hard Disk|VHD]]—Virtual Hard Disk
* [[Virtual file system|VFS]]—Virtual File System
* [[Logical volume management|VG]]—Volume Group
* [[Video Graphics Array|VGA]]—Video Graphics Array
* [[Very high frequency|VHF]]—Very High Frequency
* [[Vital Information Resource Under Seize|VIRUS]]—Vital Information Resource Under Seize
* [[VLAN]]—Virtual Local Area Network
* [[VLSM]]—Variable-length subnet masking
* [[VESA Local Bus|VLB]]—Vesa Local Bus
* [[Very low frequency|VLF]]—Very Low Frequency
* [[Very long instruction word|VLIW]]—Very Long Instruction Word
* [[Very-large-scale integration|VLSI]]—Very-Large-Scale Integration
* [[Virtual machine|VM]]—Virtual Machine
* [[Virtual memory|VM]]—Virtual Memory
* [[Hypervisor|VMM]]—Virtual Machine Monitor
* [[VNC]]—Virtual Network Computing
* [[Video on demand|VOD]]—Video On Demand
* [[Voice over Internet Protocol|VoIP]]—Voice over Internet Protocol
* [[Virtual private network|VPN]]—Virtual Private Network
* [[Virtual private server|VPS]]—Virtual Private Server
* [[Graphics processing unit|VPU]]—Visual Processing Unit
* [[Virtual reality|VR]]—Virtual Reality
* [[VRML]]—Virtual Reality Modeling Language
* [[Virtual Storage Access Method|VSAM]]—Virtual Storage-Access Method
* [[Very-small-aperture terminal|VSAT]]—Very Small Aperture Terminal
* [[VT100|VT]]—Video Terminal
* [[Virtual Tape Library|VTL]]—Virtual Tape Library
* [[Virtual Telecommunications Access Method|VTAM]]—Virtual Telecommunications Access Method
* [[Video random-access memory|VRAM]]—Video Random-Access Memory

{{div col end}}

== W ==
{{div col|colwidth=22em}}
* [[World Wide Web Consortium|W3C]]—World Wide Web Consortium
* [[WWDC]]—[[Apple Inc.|Apple]] World Wide Developer Conference
* [[Wide area file services|WAFS]]—Wide Area File Services
* [[Web Accessibility Initiative|WAI]]—Web Accessibility Initiative
* [[Wide area information server|WAIS]]—Wide Area Information Server
* [[Wide area network|WAN]]—Wide Area Network
* [[Wireless access point|WAP]]—Wireless Access Point
* [[Wireless Application Protocol|WAP]]—Wireless Application Protocol
* [[Open Watcom Assembler|WASM]]—Watcom ASseMbler
* [[Web-Based Enterprise Management|WBEM]]—Web-Based Enterprise Management
* [[Web Content Accessibility Guidelines|WCAG]]—Web Content Accessibility Guidelines
* [[Windows Communication Foundation|WCF]]—Windows Communication Foundation
* [[Wavelength-division multiplexing|WDM]]—Wavelength-Division Multiplexing
* [[WebDAV]]—WWW Distributed Authoring and Versioning
* [[Wired Equivalent Privacy|WEP]]—Wired Equivalent Privacy
* [[Interrupt|WFI]]—Wait For Interrupt
<!-- Please do not add Wireless Fidelity == Wi-Fi. If you read the article it debunks that theory. -->
* [[WiMAX]]—Worldwide Interoperability for Microwave Access
* [[WinFS]]—Windows Future Storage
* [[Windows RunTime|WinRT]]—Windows RunTime
* [[Windows Internet Name Service|WINS]]—Windows Internet Name Service
* [[Wireless LAN|WLAN]]—Wireless Local Area Network
* [[Windows Media Audio|WMA]]—Windows Media Audio
* [[Windows Management Instrumentation|WMI]]—Windows Management Instrumentation 
* [[Windows Media Video|WMV]]—Windows Media Video
* [[Windows Push Notification Service|WNS]]—Windows Push Notification Service
* [[Wake-on-LAN|WOL]]—Wake-on-LAN
* [[Wake-on-ring|WOR]]—Wake-on-Ring
* [[Write once, run anywhere|WORA]]—Write once, run anywhere
* [[Write once, run anywhere|WORE]]—Write once, run everywhere
* [[Write Once Read Many|WORM]]—Write Once Read Many
* [[Wi-Fi Protected Access|WPA]]—Wi-Fi Protected Access
* [[Web Proxy Autodiscovery Protocol|WPAD]]—Web Proxy Autodiscovery Protocol
* [[Personal area network|WPAN]]—Wireless Personal Area Network
* [[Windows Presentation Foundation|WPF]]—Windows Presentation Foundation
* [[WS-Discovery|WS-D]]—Web Services-Discovery
* [[Web Services Description Language|WSDL]]—Web Services Description Language
* [[Web Services Flow Language|WSFL]]—Web Services Flow Language
* [[Wireless USB|WUSB]]—Wireless Universal Serial Bus
* [[Wireless Wide Area Network|WWAN]]—Wireless Wide Area Network
* [[World Wide Name|WWID]]—World Wide Identifier
* [[World Wide Name|WWN]]—World Wide Name
* [[World Wide Web|WWW]]—World Wide Web
* [[WYSIWYG]]—What You See Is What You Get
* [[Wireless Zero Configuration|WZC]]—Wireless Zero Configuration
{{div col end}}

== X ==
{{div col|colwidth=22em}}
* [[Extensible Application Markup Language|XAML]]—eXtensible Application Markup Language
* [[XDM (display manager)|XDM]]—X Window Display Manager
* [[X display manager|XDMCP]]—X Display Manager Control Protocol
* [[XCBL]]—XML Common Business Library
* [[XHTML]]—eXtensible Hypertext Markup Language
* [[Xilp (Unix software)|XILP]]—X Interactive ListProc
* [[XML]]—eXtensible Markup Language
* [[XMMS]]—X Multimedia System
* [[Extensible Messaging and Presence Protocol|XMPP]]—eXtensible Messaging and Presence Protocol
* [[Extended memory|XMS]]—Extended Memory Specification
* [[Xerox Network Systems|XNS]]—Xerox Network Systems
* [[Cross-platform|XP]]—Cross-Platform
* [[Extreme Programming|XP]]—Extreme Programming
* [[XPCOM]]—Cross Platform Component Object Model
* [[XPInstall|XPI]]—XPInstall
* [[Interface description language|XPIDL]]—Cross-Platform IDL
* [[Open XML Paper Specification|XPS]]—XML Paper Specification
* [[XML Schema (W3C)|XSD]]—XML Schema Definition
* [[Extensible Stylesheet Language|XSL]]—eXtensible Stylesheet Language
* [[XSL Formatting Objects|XSL-FO]]—eXtensible Stylesheet Language Formatting Objects
* [[XSL Transformations|XSLT]]—eXtensible Stylesheet Language Transformations
* [[Cross-site scripting|XSS]]—Cross-Site Scripting
* [[eXtensible Tag Framework|XTF]]—eXtensible Tag Framework
* [[eXtended Triton Format|XTF]]—eXtended Triton Format
* [[XUL]]—XML User Interface Language
* [[XVGA]]—Extended Video Graphics Adapter
{{div col end}}

== Y ==
{{div col|colwidth=22em}}
* [[Year 2000 problem|Y2K]]—Year Two Thousand
* [[Year 2038 problem|Y2K38]]—Year Two Thousand Thirty Eight
* [[YAAF]]—Yet Another Application Framework
* [[Yacc|YACC]]—Yet Another Compiler Compiler
* [[You_aren't_gonna_need_it|YAGNI]]—You Aren't Gonna Need It
* [[YAML]]—YAML Ain't Markup Language
* [[YARN]]—Yet Another Resource Negotiator
* [[YaST]]—Yet another Setup Tool
{{div col end}}

== Z ==
{{div col|colwidth=22em}}
* [[Zone bit recording|ZCAV]]—Zone Constant Angular Velocity
* [[Zero code suppression|ZCS]]—Zero Code Suppression
* [[Zero insertion force|ZIF]]—Zero Insertion Force
* [[Zero insertion force|ZIFS]]—Zero Insertion Force Socket
* [[Zip (file format)|ZIP]]—ZIP file archive
* [[Zero instruction set computer|ZISC]]—Zero Instruction Set Computer
* [[Zero One Infinity|ZOI]]—Zero One Infinity
* [[Zope|ZOPE]]—Z Object Publishing Environment
* [[Zone Multicast Address|ZMA]]—Zone Multicast Address
* [[ZPL (programming language)|ZPL]]—Z-level Programming Language
{{div col end}}

==See also==
* [[Acronym]]
* [[Internet slang]]
* [[List of file formats]]
* [[List of information technology initialisms]]
* [[Professional certification]]

== References ==
{{Reflist}}
*{{cite web |url=https://www.allacronyms.com/computing/abbreviations |title=Computing Acronyms and Abbreviations |publisher=All Acronyms |access-date=2008-07-12 }}
*{{cite web |url=https://www.bcit.ca/programs/computer-information-technology-diploma-full-time-5540dipma/ |title=CIT Diploma |publisher=BCIT |access-date=2024-10-31 }}
*{{cite web |url=https://lethpolytech.ca/programs-and-courses/computer-information-technology |title=CIT Diploma |publisher=Lethbridge Polytechnic |access-date=2024-10-31 }}

== External links ==
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* [http://www.roesler-ac.de/wolfram/acro/all.htm The UNIX Acronym List]

{{DEFAULTSORT:Computing And It Abbreviations}}
[[Category:Lists of abbreviations]]
[[Category:Lists of computer terms]]
[[Category:Computer jargon]]