Carnal Knowledge was a short-lived British television game show relating to sex. It was shown very late at night, in accordance with its explicit subject matter. It was one of only a handful of shows to transfer from Channel 4 (where the pilot edition was shown as part of a sex-themed weekend) to ITV.

Each edition featured two different couples being asked personal questions by Maria McErlane about their sex lives. Graham Norton acted as the assistant. One of his roles was keeping the scores.