- Burt Lancaster
- Steve Buchanan
- Dorothy McGuire
- Ann Winslow
- Edmund Gwenn
- William 'Skipper' Miller
- Millard Mitchell
- 'Mac' McIntire
- Minor Watson
- Judge O'Neil
- Howard St. John
- Chief
- Hugh Sanders
- Thad Mitchell
- James Millican
- Olie Johnson
- George Adrian
- Carlos
- Rico Alaniz
- Carlos - Spanish Interpreter
- Polly Bailey
- Woman
- Jean Bane
- Cashier
- Gilbert Barnett
- Boy
- Edward Biby
- Man in Hallway
- Robert Boon
- Dutchman
- Paul Bradley
- Man
- Howland Chamberlain
- Duff
- Perdita Chandler
- Cashier
- Noble 'Kid' Chissell
- Observer on Sidewalk
- Jack Daly
- Court Clerk
- Ray De Ravenne
- Man
- D.W. De Roos
- Dutchman
- Victor Desny
- Russian Interpreter
- Arthur Dulac
- Man
- Eugene Feher
- Organ Grinder
- Norman Field
- Bailiff
- Robert Foulk
- Policeman
- Curt Furberg
- German Man
- Jon Gardner
- Jonny
- George Gastine
- Waiter
- Dick Gordon
- Diplomat
- Fred Graham
- Man Slugged by Steve in Prologue Montage
- Herschel Graham
- Cafateria Patron
- Billy Gray
- Mickey
- Sherry Hall
- Cigar Store Clerk
- Helene Hatch
- Maggie
- Whitey Haupt
- Boy
- Timmy Hawkins
- Boy
- John Hiestand
- Narrator
- Harry Hines
- News Vendor
- Kathleen Hughes
- Secretary
- Larry Keating
- James F. Lee - Skipper's Attorney
- Kenner G. Kemp
- Passerby / Nightclub Patron (uncredited)
- Jeanne Lafayette
- Diplomat
- Mike Lally
- George - Treasury Agent
- Eddie Lee
- Chinese Interpreter
- George Lee
- Chinese Interpreter
- Rudy Lee
- Boy
- Mickey Little
- Boy
- Louise Lorimer
- Art Store Proprietress
- Wilbur Mack
- Newspaper Buyer
- George Magrill
- Carnival Barker
- Edwin Max
- Mousie
- George McDonald
- Willie
- Bill McKenzie
- Jimmy
- Joe McTurk
- Gus
- Russell Meeker
- Club Patron
- Thomas Menzies
- Boy
- Patrick Miller
- Boy
- Billy Nelson
- Taxi Driver
- Erik Nielsen
- Boy
- Barry Norton
- Restaurant Diner
- Mischa Novy
- Violinist
- Frank O'Connor
- Cigar Store Counterman
- William O'Leary
- Junkman
- Gary Pagett
- Boy
- Jacquelyn Park
- Interpreter
- Joe Ploski
- Restaurant Waiter
- Paul Power
- Courtroom Spectator
- Ronnie Ralph
- High School Boy
- Peter Roman
- Boy
- Dick Ryan
- U.S. Marshal
- Warren Schannon
- Boy
- Scott Seaton
- Diplomat
- Skipper
- Please the Dog
- Norman Stevans
- Club Patron
- Bert Stevens
- Man in Corridor
- Bobby Stevens
- Bobby
- Arthur Tovey
- Club Patron
- Minerva Urecal
- Rosie
- Joan Valerie
- Cashier
- Herb Vigran
- Carny Barker
- Bess Wade
- Woman
- Geraldine Wall
- Miss Gallagher
- Frank Wilcox
- Mr. Beddington
- Max Willenz
- German Waiter
- Mervin Williams
- U.S. Attorney
- Robert B. Williams
- Sergeant
- Florence Wix
- United Nations Spectator
