 | Ray Milland als Tony Wendice |
 | Grace Kelly als Margot Wendice |
 | Robert Cummings als Mark Halliday |
 | John Williams als Chief Inspector Hubbard |
 | Anthony Dawson als Charles Swann |
 | Leo Britt als Storyteller |
 | Patrick Allen als Detective Pearson |
| George Leigh als Detective Williams |
| George Alderson als First Detective |
 | Robin Hughes als Police Sergeant O'Brien |
 | Jack Cunningham als Bobby (uncredited) |
 | Guy Doleman als Detective (uncredited) |
 | Bess Flowers als Woman Exiting Ship (uncredited) |
| Sam Harris als Man in Phone Booth (uncredited) |
 | Harold Miller als Men's Club Party Member (uncredited) |
 | Martin Milner als Policeman Outside Wendice Flat (uncredited) |
 | Forbes Murray als Judge at Margot's Trial (uncredited) |
 | Thayer Roberts als Detective (uncredited) |
 | William H. O'Brien als Waiter at Stag Dinner (uncredited) |
 | Alfred Hitchcock als Man Sitting at a Table (uncredited) |
| George James Hopkins | Set Decoration |
| Rudi Fehr | Editor |
| Robert Burks | Director of Photography |
| Alfred Hitchcock | Director |
| Dimitri Tiomkin | Original Music Composer |
| Alfred Hitchcock | Producer |
| Edward Carrere | Art Direction |
| Gordon Bau | Makeup Artist |
| Mel Dellar | Assistant Director |
| Moss Mabry | Costume Design |
| Frederick Knott | Theatre Play |
| Frederick Knott | Screenplay |
| Oliver S. Garretson | Sound |
| Dimitri Tiomkin | Conductor |
