Arthur "Dooley" Wilson (April 3, 1886 – May 30, 1953) was an American actor and singer. who is best remembered as the piano-player and singer "Sam" who sings "As Time Goes By" at the request of Ilsa Lund (Ingrid Bergman) in the 1942 film, Casablanca – the Sam in the famously misremembered line "Play it again, Sam" – a phrase which was never actually spoken in the film.
Wilson, an African-American, was a drummer and singer who led his own band in the 1920s, touring nightclubs in London and Paris. In the 1930s he took up acting for good, playing supporting roles onstage on Broadway and in a series of modest films. His role in Casablanca was by far his most famous, but his other films included My Favorite Blonde (1942, with Bob Hope), Stormy Weather (1943, with Lena Horne and the Nicholas Brothers), and the 1951 western Passage West.