Suspect is a 1937 mystery thriller play by the British authors Edward Percy and Reginald Denham, written under the pen name Rex Judd.

[1] It ran at the St Martin's Theatre in London's West End for 84 performances between 16 February and 1 May 1937.

The West End cast included Peter Murray-Hill, Campbell Gullan, David Horne, Mary Morris, Jean Cadell and Doris Lytton.

In 1939 it was adapted by the BBC for a television film of the same title and featuring a number of the original cast.

In addition a 1952 episode of the American show Broadway Television Theatre was based on the play.