- Fred MacMurray
- Professor Ned Brainard
- Nancy Olson
- Betsy Carlisle
- Keenan Wynn
- Alonzo P. Hawk
- Tommy Kirk
- Biff Hawk
- Leon Ames
- President Rufus Daggett
- Elliott Reid
- Professor Shelby Ashton
- Edward Andrews
- Defense Secretary
- David Lewis
- General Singer
- Jack Mullaney
- Air Force Captain
- Belle Montrose
- Mrs. Chatsworth
- Wally Brown
- Coach Elkins
- Wally Boag
- TV Newsman
- Don Ross
- Lenny
- Forrest Lewis
- Police Officer Kelley
- James Westerfield
- Police Officer Hanson
- Alan Carney
- First Referee
- Charlie Briggs
- Sig
- Gage Clarke
- Reverend Bosworth
- Alan Hewitt
- General Hotchkiss
- Raymond Bailey
- Admiral Olmstead
- Wendell Holmes
- General Poynter
- Leon Tyler
- Basketball Player #18
- Ed Wynn
- Fire Chief
- Carroll Adams
- Basketball Player
- Leon Alton
- Wedding Guest
- Don Anderson
- Assistant Cameraman
- Bill Baldwin
- News Reporter
- Paul Bradley
- Military Officer
- Paul E. Burns
- Taxi Driver
- Robert Burton
- Sam Wheeler
- Charlie
- Dog
- Ralph Clanton
- O.J. Turnbull
- Gary Clarke
- Boy at Dance
- Bill Cord
- Admiral's assistant
- Don Dillaway
- Defense Department Secretary
- Sam Edwards
- Military Radio Dispatcher
- Bess Flowers
- Wedding Guest
- Charles Fogel
- Citizen
- Paul Frees
- Loudspeaker Voice / Air Force Dispatcher (voice) (uncredited)
- Mike Fryer
- Basketball Player
- Richard George
- Government Agent
- Gordon Jones
- Rutland Basketball Coach
- Colin Kenny
- Citizen
- Harriet E. MacGibbon
- Wedding Guest
- Gordon Martin
- Basketball Player
- Marlin McKeever
- Football Player
- Mike McKeever
- Football Player
- William Meader
- Wedding Guest
- Henry Norell
- Assistant Fire Chief
- Gregg Palmer
- Communications Man
- Hank Patterson
- Fisherman Spectator
- Robert Perry
- Basket Ball Player
- Paul Power
- Wedding Guest
- Guy Prescott
- Reporter
- Maudie Prickett
- Woman in Street Interviewee
- Tony Regan
- Reporter
- John Rice
- Citizen
- Jeffrey Sayre
- Man Throwing Rice at Wedding
- Ray Teal
- Man in Street Interviewee
- Arthur Tovey
- Basketball Game Spectator
- Carole Wells
- Girl
- Tom Wilson
- Fisherman Spectator
- Ned Wynn
- Boy
