Oh! Calcutta! is an avant-garde theatrical revue, created by British drama critic Kenneth Tynan. The show, consisting of sketches on sex-related topics, debuted Off-Broadway in 1969 and then in London in 1970. It ran in London for over 3,900 performances, and in New York initially for 1,314. Revivals enjoyed even longer runs, including a Broadway revival that ran for 5,959 performances, making the show the longest-running revue in Broadway history.
The show sparked considerable controversy at the time, because it featured extended scenes of total nudity, both male and female. The title is taken from a painting by Clovis Trouille, itself a pun on "O quel cul t'as!" French for "What an arse you have!".