 | Marilyn Monroe als Cherie |
 | Don Murray als Beauregard 'Bo' Decker |
 | Arthur O'Connell als Virgil Blessing |
 | Betty Field als Grace |
 | Eileen Heckart als Vera |
 | Robert Bray als Carl |
 | Hope Lange als Elma Duckworth |
 | Hans Conried als Life Magazine Photographer |
 | Max Showalter als Life Magazine Reporter |
 | Linda Brace als Evelyn (uncredited) |
| Mary Carroll als Cashier (uncredited) |
| J.M. Dunlap als Orville (uncredited) |
 | Ed Fury als Cowboy in Saloon (uncredited) |
| Buddy Heaton als Clown (uncredited) |
| Fay L. Ivor als Rodeo Usher (uncredited) |
| Richard Culvert Johnson als Messenger (uncredited) |
| Terry Kelman als Gerald (uncredited) |
| Lucille Knox als Blonde on Street (uncredited) |
| Pete Logan als Announcer (uncredited) |
| Kate MacKenna als Elderly Passenger (uncredited) |
| Helen Mayon als Landlady (uncredited) |
 | David McMahon als Ticket Taker at Bus (uncredited) |
 | Cheerio Meredith als Woman in Bus Passenger Line (uncredited) |
 | Del Moore als Man at Rodeo (uncredited) |
| Phil J. Munch als Preacher (uncredited) |
| Jim Katugi Noda als Japanese Cook (uncredited) |
 | James O'Rear als Mr. Foster (uncredited) |
| Norman Papson als Bar Patron (uncredited) |
| Wilbur Plaugher als Clown (uncredited) |
 | Edward G. Robinson Jr. als Cowboy (uncredited) |
| William Schub als Messenger (uncredited) |
| George Selk als Elderly Passenger (uncredited) |
 | Henry Slate als Manager of Blue Dragon Nightclub (uncredited) |
| Bill Stanberry als Skinny Bull Rider (uncredited) |
 | Greta Thyssen als Cover Girl (uncredited) |
 | Casey Tibbs als Himself (uncredited) |
| Andy Womack als Clown (uncredited) |
| Joshua Logan | Director |
| Milton Krasner | Director of Photography |
| George Axelrod | Screenplay |
| Lyle R. Wheeler | Art Direction |
| Edward B. Powell | Orchestrator |
| Alfred Newman | Conductor |
| Helen Turpin | Hairstylist |
| Travilla | Costume Design |
| Leonard Doss | Other |
| Charles LeMaire | Wardrobe Supervisor |
| Mark-Lee Kirk | Art Direction |
| William Reynolds | Editor |
| Ken Darby | Vocal Coach |
| Harry M. Leonard | Sound |
| Paul S. Fox | Set Decoration |
| Cyril J. Mockridge | Original Music Composer |
| Alfred Newman | Original Music Composer |
| Alfred Bruzlin | Sound |
| Ken Darby | Songs |
| Ray Kellogg | Special Effects |
| Ben Kadish | Assistant Director |
| Walter M. Scott | Set Decoration |
| Buddy Adler | Producer |
| Ben Nye | Makeup Artist |
| Ray Kellogg | Visual Effects |
| Marilyn Monroe | Producer |
| William Inge | Theatre Play |
