 | Robert Redford als Paul Bratter |
 | Jane Fonda als Corie Bratter |
 | Charles Boyer als Victor Velasco |
 | Mildred Natwick als Ethel Banks |
 | Herb Edelman als Harry Pepper |
 | Mabel Albertson als Harriet |
 | Fritz Feld als Restaurant Proprietor |
 | James Stone als Delivery Man |
 | Ted Hartley als Frank |
 | Doris Roberts als Hotel Maid (uncredited) |
 | Billie Bird als Drunken Neighbor (uncredited) |
 | Paul E. Burns als Bum in Park (uncredited) |
| Bill Derringer als Store Clerk (uncredited) |
| John Indrisano als Policeman with Drunk (uncredited) |
| Gene Saks | Director |
| Neil Simon | Theatre Play |
| Neil Simon | Screenplay |
| Harold Lewis | Sound Recordist |
| William W. Gray | Unit Production Manager |
| Paul Nathan | Associate Producer |
| Hal Pereira | Art Direction |
| Walter H. Tyler | Art Direction |
| Charles Grenzbach | Sound Recordist |
| Edith Head | Costume Design |
| Robert R. Benton | Set Decoration |
| Arthur Krams | Set Decoration |
| Wally Westmore | Makeup Supervisor |
| Neal Hefti | Original Music Composer |
| Hal B. Wallis | Producer |
| William A. Lyon | Editor |
| Howard Grace | Assistant Director |
| Nellie Manley | Hair Supervisor |
| Charlsie Bryant | Script Supervisor |
| Joseph LaShelle | Director of Photography |
| Joseph H. Hazen | Executive Producer |
| Paul K. Lerpae | Visual Effects |
| Farciot Edouart | Visual Effects |
| Johnny Mercer | Lyricist |
