Without Witness is a mystery thriller play by the British authors Anthony Armstrong and Harold Simpson.

[1] It premiered at the Embassy Theatre in Swiss Cottage on 27 December 1933 before transferring to the Duke of York's Theatre in London's West End where it ran for 75 performances between 12 March and 12 June 1934, having been revised slightly from its Embassy premiere.

[2] The West End cast included Nicholas Hannen, Arthur Wontner, Bernard Lee, Frederick Piper, Hugh E. Wright, Joan Marion and Marion Fawcett.

[3] The wife of a brutal, alcoholic businessman is accused of poisoning and struggles to prove her innocence.

[4] This article on a play from the 1930s is a stub.