 | Cary Grant als Nickie Ferrante |
 | Deborah Kerr als Terry McKay |
 | Richard Denning als Kenneth Bradley |
 | Neva Patterson als Lois Clark |
 | Cathleen Nesbitt als Grandmother Janou |
 | Robert Q. Lewis als Self |
 | Charles Watts als Ned Hathaway |
 | Fortunio Bonanova als Courbet |
 | Dorothy Adams als Mother at Rehearsal (uncredited) |
 | Al Bain als Man (uncredited) |
 | Frank Baker als Ship Passenger (uncredited) |
| Mary Bayless als Ship Passenger (uncredited) |
| Dino Bolognese als Italian TV Commentator (uncredited) |
 | Paul Bradley als Ship Passenger (uncredited) |
| George Calliga als Ship Passenger (uncredited) |
| Mary Carroll als Teacher (uncredited) |
 | Steve Carruthers als Ship Passenger (uncredited) |
 | Brian Corcoran als Boy (uncredited) |
| Walt Davis als Elevator Passenger (uncredited) |
| Anthony De Mario als Waiter (uncredited) |
| Ken DuMain als Audience Member (uncredited) |
 | Minta Durfee als Ship Passenger (uncredited) |
| Michka Egan als Ship Waiter (uncredited) |
| Suzanne Ellers als Teacher (uncredited) |
| Juney Ellis als Teacher (uncredited) |
 | Franklyn Farnum als Ballet Audience Member (uncredited) |
 | Jesslyn Fax als Terry's Landlady (uncredited) |
 | Adolph Faylauer als Ship Passenger (uncredited) |
| Raoul Freeman als Ship Passenger (uncredited) |
| Priscilla Garcia als Marie (uncredited) |
| Rudy Germane als Police Officer (uncredited) |
| Kenneth Gibson als Ballet Audience Member (uncredited) |
 | Herschel Graham als Ship Passenger (uncredited) |
| Stuart Hall als Audience Member (uncredited) |
| Sam Harris als Audience Member (uncredited) |
| Lars Hensen als Man at Gangway (uncredited) |
 | Bill Hickman als Ship Passenger (uncredited) |
| Ken Kane als Elevator Operator (uncredited) |
| Terry Kelman als Orphan (uncredited) |
 | Walter Woolf King als Hospital Doctor (uncredited) |
| Jeanne Lafayette als Ballet Audience Member (uncredited) |
| Mike Lally als Ship Passenger (uncredited) |
| Richard LaMarr als Ship Passenger (uncredited) |
| Jack Lomas als Sign Painter (uncredited) |
 | Leota Lorraine als Ballet Audience Member (uncredited) |
| Robert Lynn als Doctor (uncredited) |
 | Wilbur Mack als Audience Member (uncredited) |
| Nora Marlowe als Gladys (Terry's Maid) (uncredited) |
| Nita Mathews als Party Guest (uncredited) |
| Helen Mayon als Nurse (uncredited) |
| Anthony Mazzola als Page Boy (uncredited) |
| Louis Mercier als Mario (uncredited) |
 | Harold Miller als Ship Passenger (uncredited) |
| Hans Moebus als Ship Passenger (uncredited) |
 | Michele Montau als Gabriella (uncredited) |
 | Matt Moore als Father McGrath (uncredited) |
 | Alberto Morin als Bartender (uncredited) |
 | Scotty Morrow als Orphan (uncredited) |
 | Charles Morton als Elevator Passenger (uncredited) |
 | Sol Murgi als Elevator Passenger (uncredited) |
| Alena Murray als Airline Stewardess (uncredited) |
 | Marni Nixon als Terry McKay (singing voice) (uncredited) |
 | Tom Nolan als Tyrone (uncredited) |
 | Monty O'Grady als Ship Passenger (uncredited) |
| Charles Perry als Elevator Passenger (uncredited) |
| Don Pietro als Page Boy (uncredited) |
| Murray Pollack als Audience Member (uncredited) |
| Patricia Powell als Blonde Woman (uncredited) |
| Paul Power als Ship Passenger (uncredited) |
 | Jack Raine als British TV Commentator (uncredited) |
| Jean Ransome als Ballet Audience Member (uncredited) |
| Fred Rapport als Ballet Audience Member (uncredited) |
 | Leoda Richards als Audience Member (uncredited) |
 | Paul Russell als Ship Passenger (uncredited) |
 | Jeffrey Sayre als Ballet Audience Member (uncredited) |
 | Sarah Selby als Miss Lane (uncredited) |
| Eddie Lou Simms als Bugsy (Student's Parent) (uncredited) |
| Leslie Sketchley als Crew Member (uncredited) |
 | Carl Sklover als Chauffer (uncredited) |
| Marc Snegoff als Man (uncredited) |
| Marc Snow als Ship's Photographer (uncredited) |
| Bert Stevens als Maitre d' (uncredited) |
| Tim Taylor als Elevator Passenger (uncredited) |
| Tina Thompson als Orphan (uncredited) |
| Roger Til als French Commentator (uncredited) |
 | Geraldine Wall als Miss Webb (uncredited) |
| Luree Wiese als Ballet Audience Member (uncredited) |
 | George Winslow als Orphan (uncredited) |
 | Tom Wyner als Drummer in the Orphan Band (uncredited) |
| Lyle R. Wheeler | Art Direction |
| Jack Martin Smith | Art Direction |
| Walter M. Scott | Set Decoration |
| Milton Krasner | Director of Photography |
| Lionel Newman | Conductor |
| Hugo Friedhofer | Original Music Composer |
| Donald Ogden Stewart | Screenplay |
| L.B. Abbott | Special Effects |
| Ken Darby | Vocal Coach |
| Charles LeMaire | Costume Design |
| Ben Nye | Makeup Artist |
| Helen Turpin | Hairstylist |
| Harry M. Leonard | Sound |
| Leo McCarey | Screenplay |
| Leo McCarey | Director |
| Leo McCarey | Songs |
| Leo McCarey | Story |
| Jerry Wald | Producer |
| James B. Clark | Editor |
| Vic Damone | Other |
| Mildred Cram | Story |
| Delmer Daves | Screenplay |
| Charles Peck | Sound |
| Edward B. Powell | Orchestrator |
| Harry Warren | Songs |
| Paul S. Fox | Set Decoration |
| Harold Adamson | Songs |
| Leonard Doss | Other |
| Gilbert Mandelik | Assistant Director |
| Pete King | Orchestrator |
| Jack Gertsman | Second Assistant Director |
