Who's Your Lady Friend? is a 1937 British comedy film directed by Carol Reed and starring Frances Day, Vic Oliver and Betty Stockfeld. The secretary of a beauty specialist accidentally brings the wrong person back from the railway station, triggering a series of confusions. It was based on a comedy play by Bela Jenbach and Rudolf Österreicher, which had previously been made into an Austrian film The Gentleman Without a Residence three years earlier. It was an independent production made at Ealing Studios. The film's sets were designed by the art director Erwin Scharf.