Lew Pollack (1895 – 1946) was an American song composer from New York City. He wrote music for a few popular songs, such as 'Charmaine' and 'Diane' with Erno Rapee, 'My Yiddishe Momme' with Jack Yellen, and a number of standards, including children's song 'Go In and Out The Window' and 'That's a Plenty' for Dixieland orchestras. Pollack also worked with Paul Francis Webster, Sidney Clare, and Ned Washington. In 1970, the composer was inducted to the Songwriters Hall of Fame.