The Knot Garden is the third opera by composer Michael Tippett for which he wrote the original English libretto. The work had its first performance at the Royal Opera House, Covent Garden, on 2 December 1970 conducted by Sir Colin Davis and produced by Sir Peter Hall. There is a recording with the original cast.

The first American performance was in 1974 at Northwestern University, and the first German performance in 1987 at the Musiktheater im Revier in Gelsenkirchen. In 1984 Tippett created a reduced orchestration for a revival with the London Sinfonietta at the Wilde Theatre. The reduced version has been revived six times, with productions in Britain, America, Australia, and Austria. There was a revival at the Royal Opera House in 1988, directed by Nicholas Hytner and, in 2005, Scottish Opera produced the opera for the Tippett centenary.