 | Doris Day als Isolde Poole |
 | Richard Widmark als August 'Augie' Poole |
 | Gig Young als Dick Pepper |
 | Gia Scala als Estelle Novick |
 | Elisabeth Fraser als Alice Pepper |
 | Elizabeth Wilson als Miss MacCracken |
 | Vikki Dougan als Gladys Dunne, actress |
 | Doodles Weaver als Escort |
 | Charles Wagenheim als Day Motel Man |
 | Robert B. Williams als Night Motel Man (as Robert Williams) |
 | Richard Bartell als Bartender (uncredited) |
 | Steve Carruthers als Party Guest (uncredited) |
 | Franklyn Farnum als Party Guest (uncredited) |
| Sam Harris als Party Guest (uncredited) |
 | Kenner G. Kemp als Party Guest (uncredited) |
 | Donald Kerr als Cab Driver (uncredited) |
| Richard LaMarr als Waiter (uncredited) |
| Robert Locke Lorraine als Party Guest (uncredited) |
 | Sid Melton als Truck Driver (uncredited) |
| George Nardelli als Waiter (uncredited) |
 | Howard Negley als Dr. Vancouver (uncredited) |
 | Monty O'Grady als Party Guest (uncredited) |
| Murray Pollack als Party Guest (uncredited) |
| Paul Power als Party Guest (uncredited) |
| Cosmo Sardo als Party Guest (uncredited) |
 | Jeffrey Sayre als Party Guest (uncredited) |
| Norman Stevans als Party Guest (uncredited) |
| Peter De Vries | Novel |
| Gene Kelly | Director |
| Joseph Fields | Theatre Play |
| Peter De Vries | Theatre Play |
| Joseph Fields | Screenplay |
| Jerome Chodorov | Theatre Play |
| Jerome Chodorov | Screenplay |
| Joseph Fields | Producer |
| Martin Melcher | Producer |
| Robert J. Bronner | Director of Photography |
| John McSweeney Jr. | Editor |
| Randall Duell | Art Direction |
| William A. Horning | Art Direction |
| Henry Grace | Set Decoration |
| Robert Priestley | Set Decoration |
| Sydney Guilaroff | Hairstylist |
| William Tuttle | Makeup Artist |
| James T. Vaughn | Production Manager |
| Al Jennings | Assistant Director |
| Helen Rose | Costume Design |
| Mentor Huebner | Production Illustrator |
| Wesley C. Miller | Recording Supervision |
