Humphrey Bogart

ADA Martin Ferguson

Zero Mostel

'Big Babe' Lazich

Ted de Corsia

Joseph 'Joe' Rico

Everett Sloane

Albert Mendoza

Roy Roberts

Captain Frank Nelson

Michael Tolan

James 'Duke' Malloy

King Donovan

Sergeant Whitlow

Bob Steele

Herman

Adelaide Klein

Olga Kirshen

Don Beddoe

Thomas O'Hara

Tito Vuolo

Tony Vetto

John Kellogg

Vince

Jack Lambert

'Philadelphia' Tom Zaca

Harry Wilson

B. J. (uncredited)

Dan Riss

Mayor (uncredited)