- Peter Ustinov
- General Maximilian Rodrigues De Santos
- Pamela Tiffin
- Paula Whitland
- Jonathan Winters
- General Billy Joe Hallson
- John Astin
- Sergeant Valdez
- Keenan Wynn
- General Lacomber
- Harry Morgan
- Chief of Police Sylvester
- Alice Ghostley
- Hattie
- Kenneth Mars
- Dr. Sam Gillison
- Ann Morgan Guilbert
- Edna Miller
- Bill McCutcheon
- Desmond Miller
- Gino Conforti
- Contreras
- Christopher Ross
- Gomez
- Larry Hankin
- Romero
- Paul Sand
- Moreno
- Don Diamond
- Hernandez
- Jack Colvin
- Garcia
- Jessica Myerson
- Mrs. Dodd
- Ted Gehring
- Customs Guard Collins
- Jim B. Smith
- Customs Guard Michaels
- Eldon Quick
- Quincy
- Jack Wakefield
- Policeman Milton
- Glenn Tucker
- Captain Harris
- Les Brandt
- Sentry Bus Driver
- Rex Fennel
- Helicopter Pilot
- Douglas Hare
- (uncredited)
- King Cotton the Horse
- General Maximilian Horse
