 | Gene Kelly als Don Lockwood |
 | Donald O'Connor als Cosmo Brown |
 | Debbie Reynolds als Kathy Selden |
 | Jean Hagen als Lina Lamont |
 | Millard Mitchell als R.F. Simpson |
 | Cyd Charisse als Dancer |
 | Douglas Fowley als Roscoe Dexter |
 | Rita Moreno als Zelda Zanders |
 | Mae Clarke als Hairdresser (uncredited) |
 | Bess Flowers als Audience Member (uncredited) |
 | Robert Foulk als Matt - Policeman (uncredited) |
 | Kathleen Freeman als Phoebe Dinsmore (uncredited) |
 | Joi Lansing als Chorus Girl (uncredited) |
 | Sylvia Lewis als Female Tango Dancer (uncredited) |
 | Harry 'Snub' Pollard als Old Man Getting Umbrella in "Singin' in the Rain" Number (uncredited) |
 | William Schallert als Messenger on Screen (uncredited) |
 | Elaine Stewart als Lady-in-Waiting (uncredited) |
 | Brick Sullivan als Policeman in "Singin' in the Rain" Number (uncredited) |
 | John George als Audience Member (uncredited) |
 | King Donovan als Rod (uncredited) |
 | Lana Turner als Actress in 'The Royal Rascal' (uncredited) |
| Allen Sutherland als Don as a Boy |
 | Dawn Addams als Teresa - a Lady-in-Waiting (uncredited) |
| John Albright als Call Boy (uncredited) |
| Betty Van Allen als Chorus Girl (uncredited) |
| Sue Allen als Chorus Girl (uncredited) |
| Marie Ardell als Chorus Girl (uncredited) |
| Bette Arlen als 'Miss January' in 'Beautiful Girl' segment (uncredited) |
| David Bair als Chorus Boy (uncredited) |
| Jimmy Bates als Boy (uncredited) |
| Mary Bayless als Audience Member (uncredited) |
| Marcella Becker als Chorus Girl (uncredited) |
| Margaret Bert als Wardrobe Woman (uncredited) |
 | Madge Blake als Dora Bailey (uncredited) |
| Lulu Mae Bohrman als Audience Member (uncredited) |
 | Gail Bonney als Audience Member (uncredited) |
 | Chet Brandenburg als Film Crew Member (uncredited) |
| Tex Brodus als Party Guest (uncredited) |
 | Barbara Carroll als 'Miss February' in 'Beautiful Girl' Segment (uncredited) |
| Gwen Carter als Girl Talking with Cosmo at Party (uncredited) |
| Bill Chatham als Chorus Boy (uncredited) |
| Lyle Clark als Audience Member (uncredited) |
 | Dorinda Clifton als 'Miss August' in 'Beautiful Girl' segment (uncredited) |
| Harry Cody als Audience Member (uncredited) |
| Chick Collins als Fencer (uncredited) |
| Pat Conway als Projectionist (uncredited) |
| Jeanne Coyne als Chorus Girl (uncredited) |
| Ruby C. Currie als Audience Member (uncredited) |
| Fred Datig Jr. als Movie Usher (uncredited) |
| Bert Davidson als Sound Engineer (uncredited) |
| Robert Dayo als Chorus Boy (uncredited) |
 | Gloria Dea als Chorus Girl (uncredited) |
| Patricia Denise als Chorus Girl (uncredited) |
| Harry Denny als Party Guest (uncredited) |
 | Kay Deslys als Audience Member (uncredited) |
| John Dodsworth als Baron de la Ma de la Toulon (uncredited) |
| Michael Dugan als Audience Member (uncredited) |
 | Phil Dunham als Audience Member (uncredited) |
 | Helen Eby-Rock als Audience Member (uncredited) |
| Richard Emory als Phil - Villain in Barroom Brawl (uncredited) |
| Betty Erbes als Chorus Girl (uncredited) |
 | Charles Evans als Audience Member (uncredited) |
 | Tommy Farrell als Sid Phillips (uncredited) |
| Ernie Flatt als Chorus Boy (uncredited) |
| George Ford als Security Guard (uncredited) |
 | Robert Fortier als Gangster in Broadway Melody Ballet (uncredited) |
| Dan Foster als Assistant Director (uncredited) |
| Clair Freeman als Dancer (uncredited) |
 | Lance Fuller als Chorus Boy (uncredited) |
| Doris Fulton als 'Miss October' in 'Beautiful Girl' Segment (uncredited) |
| Jeanne Gail als Chorus Girl (uncredited) |
| Glen Gallagher als Audience Member (uncredited) |
| Jon Gardner als Kid (uncredited) |
| Diane Garrett als Usherette (uncredited) |
| Jack George als Orchestra Leader (uncredited) |
| Kenneth Gibson als Party Guest (uncredited) |
| Mickey Golden als Audience Member (uncredited) |
| Inez Gorman als Mrs. Simpson (uncredited) |
| A. Cameron Grant als Audience Member (uncredited) |
| Beatrice Gray als Audience Member (uncredited) |
| Marion Gray als Audience Member (uncredited) |
| Robert Haines als Awards Ceremony Attendee (uncredited) |
| William Hamel als Audience Member (uncredited) |
| Betty Hannon als Chorus Girl (uncredited) |
| Sam Harris als Audience Member (uncredited) |
| Jean Harrison als 'Miss April' in 'Beautiful Girl' Segment (uncredited) |
| Timmy Hawkins als Boy (uncredited) |
| Jack Hendricks als Film Crew Member (uncredited) |
| Lars Hensen als Minor Role (uncredited) |
| Jean Heremans als Fencer (uncredited) |
 | Stuart Holmes als J. Cumberland Spendrill III (uncredited) |
| Don Hulbert als Chorus Boy (uncredited) |
| Frank Hyers als Audience Member (uncredited) |
| Patricia Jackson als Chorus Girl (uncredited) |
| Ivor James als Chorus Boy (uncredited) |
 | Morgan Jones als Audience Member (uncredited) |
| David Kasday als Kid (uncredited) |
| Jan Kayne als Usherette (uncredited) |
| Jimmy Kelly als Chorus Boy (uncredited) |
 | Kenner G. Kemp als Police Escort at Premiere (uncredited) |
| Mike Lally als Audience Member (uncredited) |
 | Judy Landon als Olga Mara (uncredited) |
| Joi Lansing als 'Miss November' in 'Beautiful Girl' segment (uncredited) |
| Janet Lavis als Chorus Girl (uncredited) |
| Virginia Lee als Chorus Girl (uncredited) |
| Meredith Leeds als 'Miss December' in 'Beautiful Girl' Segment (uncredited) |
| William F. Leicester als Audience Member (uncredited) |
| Peggy Leon als Audience Member (uncredited) |
| Diki Lerner als Male Tango Dancer (uncredited) |
| Bill Lewin als Bert - Cowboy Knocked Out in Barroom Brawl (uncredited) |
| King Lockwood als Assistant Cameraman (uncredited) |
 | Leon Lontoc als Filipino Butler (uncredited) |
 | Leota Lorraine als Film Crew Member (uncredited) |
 | Paul Maxey als Dancing Fat Man at Party (uncredited) |
| Dorothy McCarty als Chorus Girl (uncredited) |
 | Ann McCrea als Chorus Girl (uncredited) |
 | Philo McCullough als Audience Member (uncredited) |
 | Ray McDonald als Dancer (uncredited) |
| Johnny McGovern als Boy (uncredited) |
 | Joseph Mell als Projectionist (uncredited) |
 | Carl Milletaire als Villain (uncredited) |
| Gloria Moore als Chorus Girl (uncredited) |
 | Forbes Murray als Club Patron (uncredited) |
| Peggy Murray als Chorus Girl (uncredited) |
 | Anne Neyland als Chorus Girl (uncredited) |
| Ruth Packard als Audience Member (uncredited) |
 | Dorothy Patrick als Usherette (uncredited) |
| Allen Pinson als Fencer (uncredited) |
| Angi O. Poulos als Fruit Peddler (uncredited) |
| George Reeder als Dancer (uncredited) |
| Charles Regan als Saloon Keeper (uncredited) |
| Shirley Jean Rickert als Chorus Girl (uncredited) |
| Joanne Rio als Chorus Girl (uncredited) |
| Tony Rocket als Man in Forecourt (uncredited) |
| Victor Romito als Audience Member (uncredited) |
| Dennis Ross als Cosmo as a Boy (uncredited) |
| Paul Salata als Chorus Boy (uncredited) |
| Cosmo Sardo als Party Guest (uncredited) |
| Phil Schumacher als Audience Member (uncredited) |
| Betty Scott als Chorus Girl (uncredited) |
 | David Sharpe als Fencer (uncredited) |
 | Julius Tannen als Man in Talking Pictures Demonstration (uncredited) |
 | Harry Tenbrook als Sound Technician (uncredited) |
| Beverly Thomas als 'Miss March' in 'Beautiful Girl' Segment (uncredited) |
| Beverly Thompson als 'Miss June' in 'Beautiful Girl' Segment (uncredited) |
| Jimmy Thompson als Singer in 'Beautiful Girl' Segment (uncredited) |
| Dee Turnell als 'Miss July' in 'Beautiful Girl' segment (uncredited) |
| Dorothy Tuttle als Dancer (uncredited) |
| Tyra Vaughn als Chorus Girl (uncredited) |
| Pat Walker als 'Miss September' in 'Beautiful Girl' Segment (uncredited) |
| Tommy Walker als Chorus Boy (uncredited) |
 | Bobby Watson als Diction Coach (uncredited) |
| Chalky Williams als Awards Ceremony Attendee (uncredited) |
 | Robert B. Williams als Policeman (uncredited) |
| Wilson Wood als Rudy Vallee Impersonator (uncredited) |
| Adam York als Publicity Man (uncredited) |
| Norma Zimmer als Chorus Girl (uncredited) |
| Finn Zirzow als Awards Ceremony Attendee (uncredited) |
| Stanley Donen | Director |
| Gene Kelly | Director |
| Adolph Green | Screenplay |
| Arthur Freed | Producer |
| Adrienne Fazan | Editor |
| Randall Duell | Art Direction |
| Cedric Gibbons | Art Direction |
| Walter Plunkett | Costume Design |
| Warren Newcombe | Special Effects |
| Irving G. Ries | Special Effects |
| Adolph Green | Story |
| Jacques Mapes | Set Decoration |
| Edwin B. Willis | Set Decoration |
| Stanley Donen | Choreographer |
| Gene Kelly | Choreographer |
| Betty Comden | Screenplay |
| Betty Comden | Story |
| Sydney Guilaroff | Hair Designer |
| Douglas Shearer | Recording Supervision |
| Conrad Salinger | Orchestrator |
| Wally Heglin | Orchestrator |
| William Tuttle | Makeup Designer |
| Lennie Hayton | Music Director |
| Arthur Freed | Lyricist |
| Nacio Herb Brown | Music |
| Skip Martin | Orchestrator |
| Harold Rosson | Director of Photography |
