 | Helen Hayes als Catherine Barkley |
 | Gary Cooper als Lt. Frederic Henry |
 | Adolphe Menjou als Major Rinaldi |
 | Mary Philips als Helen Ferguson |
 | Jack La Rue als Priest |
 | Blanche Friderici als Head Nurse |
 | Mary Forbes als Miss Van Campen |
 | Gilbert Emery als British Major |
 | Henry Armetta als Bonello the Ambulance Driver (uncredited) |
 | Herman Bing als Swiss Postal Clerk (uncredited) |
 | Agostino Borgato als Hospital Porter Giulio (uncredited) |
 | Marcelle Corday als Swiss Nurse (uncredited) |
 | Gino Corrado als Italian Soldier (uncredited) |
 | William Irving als Frustrated Opera Singing Friend (uncredited) |
 | Doris Lloyd als Nurse (uncredited) |
| Ernest Hemingway | Novel |
| Benjamin Glazer | Screenplay |
| Frank Borzage | Director |
| Otho Lovering | Editor |
| Oliver H.P. Garrett | Screenplay |
| Charles Lang | Director of Photography |
| Hans Dreier | Art Direction |
| John Leipold | Original Music Composer |
| Paul Marquardt | Original Music Composer |
| Harold Lewis | Sound |
| Herman Hand | Original Music Composer |
| Bernhard Kaun | Original Music Composer |
| George Nichols Jr. | Editor |
| Edward A. Blatt | Associate Producer |
| Benjamin Glazer | Associate Producer |
| Milan Roder | Original Music Composer |
| Fred A. Datig | Casting |
| Lew Borzage | Assistant Director |
| Roland Anderson | Art Direction |
| Travis Banton | Costume Design |
| Arthur Jacobson | Assistant Director |
| W. Franke Harling | Original Music Composer |
| Ralph Rainger | Original Music Composer |
| Franklin Hansen | Sound |
| Charles Griffin | Assistant Director |
| Frank Borzage | Producer |
| Clem Jones | Props |
