They Came by Night is a 1940 British crime film directed by Harry Lachman and starring Will Fyffe, Phyllis Calvert and Anthony Hulme. It was made at the Islington Studios by Gainsborough Pictures and released by 20th Century Fox. The film's sets were designed by the art director Alex Vetchinsky. It was based on the West End play of the same title by Barré Lyndon.

It was one of several starring vehicles for Will Fyffee and a key early role for Phyllis Calvert.