It Happened to One Man is a 1940 British drama film directed by Paul L. Stein and starring Wilfrid Lawson, Nora Swinburne and Marta Labarr. The screenplay was scripted by Paul Merzbach and Nina Jarcis, based on the play of the same name by John Hastings Turner and Roland Pertwee. Produced by Victor Hanbury's British Eagle Productions, It was distributed in the United States by RKO Pictures, and premiered in New York City at the Little Carnegie Playhouse on 22 February 1941.