No Man's Land is a play by Harold Pinter written in 1974 and first produced and published in 1975. Its original production was at the Old Vic theatre in London by the National Theatre on 23 April 1975, and it later transferred to Wyndham's Theatre, July 1975 – January 1976, the Lyttelton Theatre April–May 1976, and New York's Longacre Theatre from October–December 1976. It returned to the Lyttelton from January – February 1977. It is a two-act play.

Harold Pinter was a British playwright, screenwriter, director and actor. A Nobel Prize winner, Pinter was one of the most influential modern British dramatists with a writing career that spanned more than 50 years. His best-known plays include The Birthday Party (1957), The Homecoming (1964) and Betrayal (1978), each of which he adapted for the screen. His screenplay adaptations of others' works include The Servant (1963), The Go-Between (1971), The French Lieutenant's Woman (1981), The Trial (1993) and Sleuth (2007). He also directed or acted in radio, stage, television and film productions of his own and others' works.