Frank Henry Loesser (June 29, 1910 – July 28, 1969) was an American songwriter who wrote the lyrics and scores to the Broadway hits Guys and Dolls and How To Succeed In Business Without Really Trying, among others. He won separate Tony Awards for the music and lyrics in both shows, as well as sharing the Pulitzer Prize for Drama for the latter. He also wrote numerous songs for films and Tin Pan Alley, many of which have become standards, and was nominated for five Academy Awards for best song, winning once, for "Baby, It's Cold Outside".
Loesser was born in New York City to Henry Loesser, a pianist, and Julia Ehrlich. He left City College of New York in 1925 after one year. After trying various jobs, by 1935 he was performing in a club with singer Lynn Blankenbaker Garland, whom he married in 1936.
After signing with Universal Pictures in 1936 he moved to Hollywood, and then worked for Paramount Pictures. He wrote the lyrics for many songs during this period, including "Two Sleepy People" and “I Hear Music.” He stayed in Hollywood until World War II, when he joined the Army Air Force.