- Jack Lemmon
- Professor Fate / Crown Prince Frederick Hoepnick
- Tony Curtis
- The Great Leslie
- Natalie Wood
- Maggie Dubois
- Peter Falk
- Maximilian Meen
- Keenan Wynn
- Hezekiah Sturdy
- Arthur O'Connell
- Henry Goodbody
- Vivian Vance
- Hester Goodbody
- Dorothy Provine
- Lily Olay
- Larry Storch
- Texas Jack
- Ross Martin
- Baron Rolfe Von Stuppe
- George Macready
- General Kuhster
- Marvin Kaplan
- Frisbee
- Hal Smith
- Mayor of Boracho
- Denver Pyle
- Sheriff of Boracho
- William Bryant
- Baron's Guard
- Ken Wales
- Baron's Guard
- Victor Adamson
- Barfly
- Richard Alexander
- Barfly
- Leon Alton
- Townsman
- Walter Bacon
- Reporter
- Frank Baker
- Observer at Start
- Paul Baxley
- Saloon Brawler
- Brandon Beach
- Man in Hallway at Sentinel
- Herman Belmonte
- Barfly
- Shirley Blackwell
- Observer at Start
- Bill Borzage
- Townsman
- George Boyce
- Executive Board Member
- Carole Bryan
- Saloon Showgirl
- Paul Bryar
- Policeman
- Robert Carson
- Vice Chairman
- Bill Catching
- Saloon Brawler
- Noble 'Kid' Chissell
- Auto Worker
- Charles Cirillo
- Observer at Start
- Joseph Crehan
- Observer at Start
- Blake Edwards
- Guy with Moustache
- Frank Ellis
- Barfly
- Joe Evans
- Executive Board Member
- Joe Ferrante
- Barfly
- Bob Folkerson
- Barfly
- Fritz Ford
- Cowboy
- George Ford
- Man in Hallway at Sentinel
- Charles Fredericks
- Master of Ceremonies
- Jack Gordon
- Observer at Start
- Sol Gorss
- Saloon Brawler
- Duke Green
- Barfly
- Silver Harr
- Barfly
- Sam Harris
- Man in Hallway at Sentinel
- Harry Harvey
- Executive Board Member
- Al Haskell
- Barfly
- Chester Hayes
- Man in Bear Suit
- Chuck Hayward
- Soldier
- Jack Henderson
- Executive Board Member
- Lars Hensen
- Reporter
- Bob Herron
- Palace Guard
- Chuck Hicks
- Saloon Brawler
- George Holmes
- Reporter
- Charles Horvath
- Texas Jack's Henchman / Baker in Pie Fight (uncredited)
- Clegg Hoyt
- Man in Saloon
- Roy Jenson
- Saloon Brawler
- Kenner G. Kemp
- Townsman
- Patricia King
- Woman in West
- Frank Kreig
- Starter
- Mike Lally
- Bettor
- Jeff Lawrence
- Observer at Start
- Carl M. Leviness
- Man in Hallway at Sentinel
- King Lockwood
- Executive Board Member
- Carey Loftin
- Saloon Brawler
- Alan Marston
- Barfly
- Mathew McCue
- Observer at Start
- Philo McCullough
- Townsman
- Francis McDonald
- Russian
- Rod McGaughy
- Barfly
- J. Edward McKinley
- Chairman
- King Mojave
- Reporter
- Boyd 'Red' Morgan
- Saloon Brawler
- Richard Mosier
- Boy Eating Popcorn
- Hal Needham
- Saloon Brawler
- Joyce Nizzari
- The Crown Prince's dance partner
- Daniel Nunez
- Observer at Start
- Owen Orr
- Soldier
- Joe Palma
- Conductor
- Harvey Parry
- Cowboy Shooting Gun in Saloon
- Gil Perkins
- Saloon Brawler
- Jack Perkins
- Texas Jack Henchman
- Charles Perry
- Townsman
- Fred Rapport
- Barfly
- Raoul Retzer
- Mayor-Domo
- Greg Rhinelander
- Man in Hallway at Sentinel
- John Rice
- Observer at Start
- Hal Riddle
- Baker
- Christopher Riordan
- Cowboy / Dancer (uncredited)
- Robert Robinson
- Barfly
- Clark Ross
- Reporter
- Danny Sands
- Barfly
- Maria Schroeder
- Woman in Tobelsk
- Jerry Schumacher
- Auto Worker
- Charles Seel
- Freight Agent
- Sarah Selby
- Townswoman
- Alex Sharp
- Saloon Brawler
- Johnny Silver
- Baker
- Leslie Sketchley
- Executive Board Member
- Carl Sklover
- Townsman
- Paul Smith
- First Employee
- Tom Smith
- Barfly
- Cap Somers
- Observer at Start
- Paul Stader
- Saloon Brawler
- Tom Steele
- Saloon Brawler
- Robert R. Stephenson
- Bishop at Coronation
- Norman Stevans
- Observer at Start
- Bert Stevens
- Townsman
- Art Stewart
- (uncredited)
- Frank D. Strong
- Trombonist in Marching Band
- Charles Sullivan
- Townsman
- Akim Tamiroff
- Observer at Start
- Arthur Tovey
- Reporter
- George Tracy
- Barfly
- John Truax
- Prison Guard
- Dale Van Sickel
- Driver-Contestant in Green Car, #3
- Max Wagner
- Barfly
- Jesse Wayne
- Barfly
- Harry Wilson
- Townsman
