Cygnus X-1 is an X-ray source in the constellation Cygnus.
Cygnus X-1 may also refer to:
- "Cygnus X-1" (song series), a two-part song by the band Rush
- "Cygnus X-1", a song by Bethany Curve from the album Gold
Cygnus X-1 is an X-ray source in the constellation Cygnus.
Cygnus X-1 may also refer to: