In 1922 New York City, Millie Dillmount and Miss Dorothy Brown are just two of the girls living at the Priscilla Hotel for Single Young Ladies run by Mrs. Meers. Orphaned, Miss Dorothy, just recently arrived, is a naive, old-fashioned girl from a seemingly privileged background who has aspirations to be a stage actress. From more modest means, Millie, in New York for three months, used to be old fashioned, but now has a new modern sensibility and look to match, complete with bobbed hair and dresses with hemlines above the knee. Included in this new modern sensibility is Millie's goal of getting a job as a stenographer, with a quick promotion to being her wealthy boss' "Mrs.". Love is not to factor into the equation. She believes she's found the right employer in the form of chisel-jawed Trevor Graydon of the Sincere Trust Insurance Company. Millie's pursuit of Mr. Graydon is despite the fact that Mr...
| Julie Andrews | Millie Dillmount |
| James Fox | Jimmy Smith |
| Mary Tyler Moore | Miss Dorothy Brown |
| Carol Channing | Muzzy Van Hossmere |
| John Gavin | Trevor Graydon |
| Russell Metty | Cinematographer |
| Jack Soo | Oriental #1 |
| Pat Morita | Oriental #2 |
| Stuart Gilmore | Editor |
| Philip Ahn | Tea |
| Anthony Dexter | Juarez |
| Cavada Humphrey | Miss Flannery |
| Herbie Faye | Taxi Driver |
| Michael St. Clair | Baron Richter |
| Lisabeth Hush | Judith Tremaine |
| Ann Dee | Singer |
| Beatrice Lillie | Mrs. Meers |
| Jackie Allen | Miss Dorothy Brown (singing voice) (uncredited) |
| David Ahdar | Party Guest (uncredited) |
| Jimmy Bryant | Jimmy Smith (singing voice) (uncredited) |
| Sammy Cahn | Song Writer |
| Leon Alton | Party Guest (uncredited) |
| Albert Carrier | Adrian Huntley (uncredited) |
| Jimmy Van Heusen | Song Writer |
| Mae Clarke | Woman in the Office (uncredited) |
| Larry Arnold | Waiter (uncredited) |
| Alan Copeland | Voice on Record (voice) (uncredited) |
| Sylvia Neufeld | Song Writer |
| Arline Bletcher | Minor Role (uncredited) |
| Tex Brodus | Party Guest |
| Jay Thompson | Song Writer |
| Don Crichton | Minor Role (uncredited) |
| Bill Lee | Trevor Graydon (singing voice) (uncredited) |
| Elmer Bernstein | Composer |
| André Previn | Composer |
| Todd Mason | Male Pedestrian (uncredited) |
| Joseph Mell | Newspaper Vendor (uncredited) |
| Waldon O. Watson | sound |
| William Russell | sound |
| Lou Nova | Cruncher (uncredited) |
| Paula Dell | Russ Saunders Group (uncredited) |
| Christopher Riordan | Jazz Baby Dance Partner (uncredited) |
| Ronald Pierce | sound |
| Ted DeWayne | Russ Saunders Group (uncredited) |
| Alexander Golitzen | Art Director |
| Victor Rogers | Gregory Huntley (uncredited) |
| Bonnie Evans | Young Lady (uncredited) |
| George C. Webb | Art Director |
| Benny Rubin | Waiter (uncredited) |
| Diane Sayer | Flapper (uncredited) |
| Darryl Ferges | Russ Saunders Group (uncredited) |
| Robert Foulk | Taxi Driver (uncredited) |
| Jeffrey Sayre | Party Guest (uncredited) |
| Buddy Schwab | Dorothy's Dance Partner (uncredited) |
| Ben Frommer | Wedding Guest (uncredited) |
| Bobby Gilbert | Wedding Guest |
| George Golden | Party Guest |
| Marianne Gordon | Lovely Blonde Girl |
| Jackie Ward | Ethel Pease (singing voice) (uncredited) |
| Mary Grover | Ethel Pease |
| Kenneth Yee | Stoic Booth Owner (uncredited) |
| Alberto Zoppe | Performer in Show (uncredited) |
| Ed Haskett | Passerby |
| James Hibbard | Jewish Bridegroom |
| Shep Houghton | Party Guest |
| Rini Jarmon | Ruth |
| Joseph La Cava | Waiter |
| Douglas Green | Assistant Director |
| Mary Lee | Chinese Woman |
| Billy Louie | Chinese Woman |
| Karl Lukas | Bouncer |
| Murray Pollack | Party Guest |
| Benito Prezia | Bernini Brother |
| Leoda Richards | Party Guest |
| Robert Robinson | Wedding Guest |
| Sheila Rogers | Secretary |
| Ray Saunders | Russ Saunders Group |
| Russell Saunders | Russ Saunders Group |
| Bernard Sell | Party Guest |
| Billy Snyder | Russ Saunders Group |
| Hal Taggart | Worker Exiting Building |
| Jack Tygett | Dancing Rabbi |
| Robert Thompson | Dancer |
| Ruggera Zoppe | The Zoppe Troupe Member |
| Sandra Zoppe | The Zoppe Troupe Member |
| Jean Louis | Custome Designer |
