Leo Robin was an American composer, lyricist and songwriter. He is probably best known for collaborating with Ralph Rainger on the 1938 Oscar-winning song "Thanks for the Memory," sung by Bob Hope and Shirley Ross in the film The Big Broadcast of 1938, and with Jule Styne on "Diamonds Are a Girl's Best Friend," a song whose witty, Cole Porter style of lyric came to be identified with its famous interpreter Marilyn Monroe.

Ralph Rainger was an American composer of popular music principally for films.