The Heart of Saturday Night is the second studio album by singer and songwriter Tom Waits, released in 1974 on Asylum Records. The title song was written as a tribute to Jack Kerouac.
The album cover is based on In the Wee Small Hours by Frank Sinatra. It is an illustration featuring a tired Tom Waits being observed by a blonde prostitute as he exits a neon-lit cocktail lounge late at night. Cal Schenkel was the art director and the cover art was created by Lyn Lascaro.