- Donald O'Connor
- Lt. Peter Stirling / Slicker Donevan
- Martha Hyer
- Betsy Donevan
- Richard Erdman
- Murph
- Jim Backus
- Commander Hutch
- Clint Eastwood
- Jonesy
- David Janssen
- Lieutenant Anders
- Leigh Snowden
- Appleby
- Martin Milner
- Rick
- Paul Burke
- Tate
- Phil Garris
- Tony
- Myrna Hansen
- Helen
- Jane Howard
- Standish
- Virginia O'Brien
- Miss Kittredge
- William Forrest
- Admiral
- Molly
- Francis
- Erville Alderson
- Man on Park Bench
- Hy Averback
- Prescott
- Bill Baldwin
- Narrator
- Timothy Carey
- Auctioneer's Helper
- Frank Chase
- Yeoman
- John Compton
- Aide
- James Craven
- Oscillator Tester
- Art Gilmore
- Lieutenant Hopper
- Lee Graham
- Spectator
- Joseph J. Greene
- Senator
- Bob Hoy
- Creavy
- Jil Jarmyn
- Mitzi
- Kenner G. Kemp
- Man in Auction Tent
- Donald Kerr
- Man in Auction Tent
- Walter Woolf King
- Jensen
- Henry Kulky
- Auction Bidder
- Kenneth MacDonald
- Motorcycle Policeman
- George E. Mather
- Enlisted Man
- Michael McHale
- Bus driver
- Mary Newton
- Minor Role
- Harvey Parry
- Bull Bostwick
- John Pickard
- Shore Patrolman
- James Pryor
- Gate Guard
- Joey Ray
- Bostwick's Second
- Charles Sherlock
- Auctioneer's Assistant
- Robert Slaven
- Sailor
- Olan Soule
- Airline Ticket Clerk
- Carl 'Alfalfa' Switzer
- Timekeeper
- Garry Thorne
- Guard
- David Thursby
- Pawnbroker
- James Todd
- General
- Louis Towers
- Boy
- Frankie Van
- Referee
- Ray Walker
- Auctioneer
- Dick Wessel
- Gas Station Attendant
- Chill Wills
- Francis the Talking Mule
