Humphrey Bogart
as Sam Spade
Mary Astor
as Brigid O'Shaughnessy
Gladys George
as Iva Archer
Peter Lorre
as Joel Cairo
Barton MacLane
as Det. Lt. Dundy
Ricardo Cortez
as Sam Spade
Dudley Digges
as Casper Gutman
Robert Elliott
as Detective Lt. Dundy