Places – O
- O’Keefe Centre for the Performing Arts, Toronto, Canada
- OBA – Openbare Bibliotheek Amsterdam
- OFS Studio, Oxford
- Oakmere Theatre Potters Bar
- Oakwood Arts Centre, Maldon
- Oasis Theatre, Israel
- Ocean Terminal Big Top, Edinburgh
- Octagon Theatre, Bolton
- Octagon Theatre, Okehampton
- Octagon Theatre, Perth
- Octagon Theatre, Yeovil
- Odeon Theatre, Doncaster
- Odeon Theatre, Ipswich
- Odeon Theatre, Southend
- Odeon Theatre, Taunton
- Odeon of Herodes Atticus
- Odyssey, N7
- Odéon-Théâtre de l’Europe, Paris
- Offstage Downstairs, London NW1
- Ohel Theatre, Tel Aviv, Israel
- Okehampton Charter Hall
- Old Bull Arts Centre, Barnet
- Old College Quad, Edinburgh
- Old Court Studio
- The Old Court, Windsor
- The Old Electric Theatre, Blackpool
- The Old Fire Station Studio Theatre, Birmingham
- The Old Fire Station, Carlisle
- The Old Fire Station, Oxford
- Old Fitzroy Theatre, Sydney
- Old Half Moon
- Old Joint Stock Theatre, Birmingham
- Old Laundry Theatre, Bowness
- Old Library, Lady Margaret Hall, Oxford
- Old Market, Brighton
- Old Museum Arts Centre, Belfast
- Old Museum of Transport, Glasgow
- Old Operating Theatre, London
- Old Paddling Pool, Queen’s Wood, Highgate
- Old Red Lion Theatre Pub, London (dates unknown)
- Old Red Lion Theatre, London
- Old Red Lion, Bridge Street, Stratford-upon-Avon
- Old Rep Theatre, Birmingham
- Old Saint Paul’s Church, Edinburgh
- Old Sheriff Court, Glasgow
- The Old Sheriff Court, Glasgow
- The Old Sorting Office, Barnes
- Old Town Hall, Hemel Hempstead
- Old Town Hall Arts Centre, Hemel Hempstead
- Old Town Hall Arts Centre, Staines
- Old Tram Shed, Magdalen Street, Colchester
- Old Vic, London
- Old Vic Tour
- Old Vic Tunnels, London
- Old Vic, Australian Tour
- Old Vic, Australian/Latin American Tour
- Old Vic, Liverpool
- The Old Vic, London
- Old Vic, Russia & Poland Tour
- Oldbury Rep
- Oldham Coliseum
- Oldham Library
- Oldham Repertory Theatre
- Ollie’s Bar in Oakland, USA
- Olympia Theatre, Dublin
- Olympic Theatre, London
- Omnibus Theatre, Clapham, London
- One Man Theatre
- Online
- Open Air Theatre, Avonbank Gardens, Stratford-upon-Avon
- Open Air, Southwark Park
- Open Space Theatre, Tottenham Court Road, London
- Oper Graz
- Opera Comique, London
- Opera House & Theatre, Bury
- Opera House, Blackpool
- Opera House, Brixton
- Opera House, Cape Town
- Opera House, Cheltenham
- Opera House, Cork
- Opera House, Coventry
- Opera House, Crouch End
- Opera House, Hanley
- Opera House, Jersey
- Opera House, Kidderminster
- Opera House, Macclesfield
- Opera House, Manchester
- Opera House, Newcastle-upon-Tyne
- Opera House, Northampton
- Opera House, Perth
- Opera House, Scarborough
- Opera House, Southport
- Opera House, Stockport
- Opera House, Treherbert
- Opera House, Tunbridge Wells
- Opera House, Wakefield
- Opera House, Workington
- Opera Stabile
- Opera Theatre, Adelaide, Southern Australia
- Opera Toulon, France
- Opera de Lyon, Lyon
- The Opera, Lincoln’s Inn Fields
- Orange Tree Theatre, Richmond
- The Orange, Pimlico
- The Orangery, Kilworth House
- Orchard Theatre, Dartford
- Oregon Cabaret Theatre,
- Orleans House Gallery, Twickenham
- Orpen Memorial Hall, West Bergholt, Colchester
- Orpheum Theatre, Golders Green
- Orpheum Theatre, San Francisco, California
- Orpington Central School
- Osborne Theatre
- Osmaston Park, Derby
- Osterley Park Gardens, Isleworth
- Oswaldtwistle Civic Theatre
- Oswaldtwistle Town Hall
- The Other Palace, London
- The Other Place Rehearsal Room, Stratford-upon-Avon
- The Other Place, Stratford-upon-Avon
- The Out of the Blue Drill Hall, Edinburgh
- Outside York Minster
- Outside the Beehive Inn, Edinburgh
- Outside venue, meeting at The Other Place, Stratford-upon-Avon
- Oval House Theatre, London
- Oval House Theatre Upstairs
- Overground Theatre, Kingston
- Overseas House, 100 Princes Street, Edinburgh
- Oxford Castle
- Oxford Playhouse
- Oxford Playhouse and on tour
- Oxford University
- Oxford University Camp
- Oystermouth Castle, The Mumbles, Swansea
