I Can't Believe That You're in Love with Me is a 1926 popular song and jazz standard written by Jimmy McHugh with lyrics by Clarence Gaskill. It was introduced in 1926 by Roger Wolfe Kahn and His Orchestra, and Louis Armstrong was among the early recordings in 1930. Over the years it became a widely recorded standard with versions by Billie Holiday (1938), Ella Fitzgerald (1942), Dinah Washington (1960), Frank Sinatra (1961), Dean Martin (1960) and Tony Bennett (Cloud 7, 1955), among others. The tune has appeared in films such as Detour (1945) where Claudia Drake sings it, and The Caine Mutiny (1954) and Thoroughly Modern Millie (1967). It is commonly classified as a pop standard and jazz standard. Notable modern arrangements include Darmon Meader’s chart for New York Voices on Sing, Sing, Sing, and it is published in sheet music editions for vocal solo with jazz ensemble.