Gaiety Theatre or
Gayiety Theatre, and variations may refer to theaters (or theatres) in:
Europe
- Gaiety Theatre, Ayr, a theatre in Ayr, Scotland (1871)
- Gaiety Theatre, Dublin, a theatre in Dublin, Ireland (opened 1871)
- Gaiety Theatre, London, was a musical theatre in London, UK (1864-1956, demolished)
- Gaiety Theatre, Manchester, opened 1884, demolished 1957
- Gaiety Theatre, Isle of Man, an opera house and theatre (opened 1900) in Douglas