- Robert Montgomery
- John O'Hara
- Virginia Bruce
- Frances Blake
- Lewis Stone
- Major Reed
- Andy Devine
- Charlie Spill
- Henry Hull
- Dr. Jesse Lazear
- Charles Coburn
- Dr. Finlay
- Buddy Ebsen
- 'Jellybeans'
- Henry O'Neill
- Gorgas
- Janet Beecher
- Miss Macdade
- William Henry
- Breen
- Alan Curtis
- Brinkerhof
- Sam Levene
- Busch
- Stanley Ridges
- Dr. James Carroll
- Phillip Terry
- Ferguson
- Jonathan Hale
- Major General Leonard Wood
- William Arnold
- Officer
- Joseph E. Bernard
- Carpenter - Soldier
- Roger Converse
- Lieutenant
- Joe Dominguez
- Second Interpreter
- Rosina Galli
- Spanish Woman
- C. Henry Gordon
- Col. Wiggins - Medical Corp
- George Magrill
- Cavalryman
- Francisco Marán
- Interpreter
- Douglas McPhail
- Joey - Patient
- Buddy Messinger
- Saluting Patient
- William Newell
- Soldier
- Frank O'Connor
- Officer
- Ted Oliver
- Cavalryman
- Inez Palange
- Dr. Finlay's Housekeeper
- John Patterson
- Cavalryman
- Jack Pennick
- Soldier Who Once Had Yellow Jack
- Frank Puglia
- Stagamonte - Reed's Aide
- Brent Sargent
- Cavalryman
- Harold Schlickenmayer
- Corporal
- Harry Semels
- Cuban Carriage Driver
- Hudson Shotwell
- Cavalryman
- Larry Steers
- Officer
- Harry Strang
- Aide
- Brick Sullivan
- Sergeant
- Lucio Villegas
- Old Man in Bed
- Dick Wessel
- Cavalryman
