 | Sandy Duncan als Amy Cooper |
 | Tony Roberts als Andy Hobart |
 | Todd Susman als Norman Cornell |
 | Elizabeth Allen als Landlady |
 | Artie Lewis als Mr. Karlson |
| Allen Jung als Laundryman |
| Helen Kleeb als YWCA Receptionist |
 | Harry Northup als Cowboy on Bus |
| Gordon Bosserman als Karlson's Boy |
| Jim Conners als Karlson's Boy |
 | Peter Hobbs als Man in Car |
| Alan Paige als Neighbor (uncredited) |
| Betty Palivoda als Checker in Market (uncredited) |
| Victor Paul als Policeman (uncredited) |
 | Charlie Picerni als Policeman (uncredited) |
| Sally Yarnell als Neighbor (uncredited) |
| Arnold Margolin | Writer |
| Hoyt Bowers | Casting |
| Howard W. Koch | Producer |
| Sam Leavitt | Director of Photography |
| Neil Simon | Theatre Play |
| Reg Allen | Set Decoration |
| Lawrence G. Paull | Production Design |
| Jim Parker | Writer |
| Jerry Paris | Director |
| Charles Fox | Original Music Composer |
| Frank Bracht | Editor |
| Ernie F. Orsatti | Stunts |
| Charlie Picerni | Stunts |
| Jack Bear | Costume Design |
| Lee Harman | Makeup Artist |
| Alan Rudolph | Second Assistant Director |
| William H. Burton Sr. | Stunt Double |
| Dick Webb | Special Effects |
| Frank Orsatti | Stunts |
| Victor Paul | Stunts |
| Donna Garrett | Stunts |
| Howard Curtis | Stunt Double |
