Jack Lemmon
Professor Fate / Crown Prince Frederick Hoepnick
Tony Curtis
The Great Leslie
Natalie Wood
Maggie Dubois
Peter Falk
Max
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
William Bryant
Baron's Guard
Ken Wales
Baron's Guard
Hal Needham
Saloon Brawler (uncredited)
Raoul Retzer
Mayor-Domo (uncredited)
Leslie Sketchley
Executive Board Member (uncredited)
Sam Harris
Man in Hallway at Sentinel
Kenner G. Kemp
Townsman
Bert Stevens
Townsman
Arthur Tovey
Reporter
Chuck Hayward
Soldier
George Boyce
Executive Board Member
Jerry Schumacher
Auto Worker
Charles Fredericks
Master of Ceremonies
Max Wagner
Barfly
Paul Bryar
Policeman (uncredited)
Jack Gordon
Observer at Start (uncredited)
Sol Gorss
Saloon Brawler (uncredited)
Harry Harvey
Executive Board Member (uncredited)
Bob Herron
Palace Guard (uncredited)
Chuck Hicks
Saloon Brawler (uncredited)
Christopher Riordan
Cowboy / Dancer (uncredited)
Charles Seel
Freight Agent (uncredited)
Paul Smith
First Employee (uncredited)
Tom Steele
Saloon Brawler (uncredited)
Dale Van Sickel
Driver-Contestant in Green Car, #3 (uncredited)