Dick Powell as Johnny O'Clock

Evelyn Keyes as Nancy Hobson

Lee J. Cobb as Inspector Koch

Ellen Drew as Nelle Marchettis

Nina Foch as Harriet Hobson

Thomas Gomez as Pete Marchettis

John Kellogg as Charlie

Jim Bannon as Chuck Blayden

Mabel Paige as Slatternly Woman Tenant

Phil Brown as Phil, Hotel Clerk

Fred Aldrich as Hotel Doorman

George Alesko as Practical Dealer

John P. Barrett as Floorman

Fred Beecher as Practical Dealer

Brooks Benedict as Card Player

John Berkes as Waiter

Jeff Chandler as Turk

Gene Delmont as Dealer

Johnny Duncan as Newsboy

Matty Fain as Fleming

Virginia Farmer as Mrs. Wilson

Victoria Faust as Marion

Adolph Faylauer as Hotel Guest

Jerry Frank as Man

Ralph Freedman as Practical Dealer

Raoul Freeman as Detective

Dick Gordon as Card Player

Jesse Graves as Redcap

Kit Guard as Punchy

Robert Haines as Gambler

Joe Helper as Practical Dealer

Al Hill as Fisherman

Kenner G. Kemp as Hotel Desk Man

Pat Lane as Onlooker

George Lloyd as Fisherman

Cy Malis as Dealer

Edward Margolis as Practical Dealer

Charles Marsh as Businessman

Allen Mathews as Bodyguard

Thomas H. O'Neil as Practical Dealer

Bob Perry as Dealer

Charles Perry as Dealer

Robin Raymond as Hatcheck Girl

Shimen Ruskin as Dry Cleaner Guy

Carl Saxe as Detective

Jeffrey Sayre as Card Player

Cy Schindell as Dealer

Sammy Shack as Dealer

Jack C. Smith as Practical Dealer

Charles St. George as Dealer

Bert Stevens as Passerby

Bill Stubbs as Practical Dealer

Brick Sullivan as Policeman

Ralph Volkie as Dealer

Charles Wexler as Bartender

George Zouzaniles as Practical Dealer

Charles Mueller as Bodyguard

Kenneth MacDonald as Cop