%22I Left My Heart in San Francisco%22 is a popular song, written in the fall of 1953 in Brooklyn, New York, by George Cory (1920-1978) and Douglass Cross (1920-1975) and best known as the signature song of Tony Bennett.The song was released as a single by Bennett on Columbia Records as the b-side to %22Once Upon A Time,%22 peaked at #19 on the Billboard Hot 100, and was later issued on the album of the same name. The song is one of the official anthems for the city of San Francisco.