 | James Stewart als Dr. Ben McKenna |
 | Doris Day als Jo McKenna |
 | Brenda De Banzie als Lucy Drayton |
 | Bernard Miles als Edward Drayton |
 | Ralph Truman als Buchanan |
 | Daniel Gélin als Louis Bernard |
 | Mogens Wieth als Ambassador |
 | Alan Mowbray als Val Parnell |
 | Hillary Brooke als Jan Peterson |
 | Reggie Nalder als Assassin at Albert Hall |
 | Richard Wattis als Assistant Manager |
 | Noel Willman als Woburn |
 | Christopher Olsen als Hank McKenna |
 | Alix Talton als Helen Parnell |
 | Yves Brainville als Police Inspector |
 | Carolyn Jones als Cindy Fontaine |
 | Bernard Herrmann als Conductor at Albert Hall |
| Covent Garden Chorus als Themselves |
| Barbara Howitt als Self - Soloist |
| Patrick Aherne als Handyman (uncredited) |
 | Frank Albertson als Worker at the Taxidermist's (uncredited) |
| Frank Atkinson als Taxidermist (uncredited) |
 | John Barrard als Taxidermist (uncredited) |
| Mayne Lynton als Taxidermist (uncredited) |
| Clifford Buckton als Sir Kenneth Clarke (uncredited) |
| Walter Bacon als Church Member (uncredited) |
| Lovyss Bradley als Church Member (uncredited) |
| Nora Bush als Church Member (uncredited) |
| Ann Kunde als Church Member (uncredited) |
| Jean Ransome als Church Member (uncredited) |
 | Albert Carrier als French Policeman (uncredited) |
| Louis Mercier als French Policeman (uncredited) |
 | Anthony Warde als French Policeman (uncredited) |
 | Frank Baker als Royal Albert Hall Attendee (uncredited) |
| Oliver Cross als Royal Albert Hall Attendee (uncredited) |
| Sam Harris als Royal Albert Hall Attendee (uncredited) |
 | Jimmie Horan als Royal Albert Hall Attendee (uncredited) |
 | Carl M. Leviness als Royal Albert Hall Attendee (uncredited) |
| Lee Miller als Royal Albert Hall Attendee (uncredited) |
 | Arthur Tovey als Royal Albert Hall Attendee (uncredited) |
 | Harry Fine als Edington (uncredited) |
| Alex Frazer als Man (uncredited) |
| Wolf Frees als Aide to Prime Minister (uncredited) |
 | Richard Marner als Aide to Prime Minister (uncredited) |
 | Milton Frome als Guard (uncredited) |
 | Walter Gotell als Guard (uncredited) |
 | Leo Gordon als Chauffeur (uncredited) |
 | Alfred Hitchcock als Man in Morocco Marketplace (uncredited) |
 | Gladys Holland als Bernard's Date at Restaurant (uncredited) |
| George Howe als Ambrose Chappell Sr. (uncredited) |
 | Richard Wordsworth als Ambrose Chappell Jr. (uncredited) |
| Eumenio Blanco als Arab (uncredited) |
 | Allen Jaffe als Arab (uncredited) |
 | Lou Krugman als Arab (uncredited) |
 | Harold Kasket als Butler (uncredited) |
| Barry Keegan als Patterson (uncredited) |
 | Lloyd Lamble als General Manager of Albert Hall (uncredited) |
 | Lewis Martin als Detective (uncredited) |
| Ralph Neff als Henchman (uncredited) |
| John O'Malley als Uniformed Attendant (uncredited) |
| Eric Snowden als Special Branch Officer (uncredited) |
| Patrick Whyte als Special Branch Officer (uncredited) |
| Alma Taylor als Box Office Woman (uncredited) |
| Guy Verney als Footman (uncredited) |
| Peter Williams als Police Sergeant (uncredited) |
| John Marshall als Butler (uncredited) |
| Alexis Bobrinskoy als Foreign Prime Minister (uncredited) |
| Bernard Herrmann | Original Music Composer |
| Henry Bumstead | Art Direction |
| Alfred Hitchcock | Director |
| Alfred Hitchcock | Producer |
| Herbert Coleman | Producer |
| Herbert Coleman | Second Unit |
| Robert Burks | Director of Photography |
| George Tomasini | Editor |
| John C. Hammell | Music Editor |
| Charles Bennett | Author |
| Edith Head | Costume Design |
| John Michael Hayes | Screenplay |
| Hal Pereira | Art Direction |
| Sam Comer | Set Decoration |
| Wally Westmore | Makeup Department Head |
| C.O. Erickson | Unit Production Manager |
| Virginia Darcy | Hairstylist |
| Arthur Krams | Set Decoration |
| Howard Joslin | Assistant Director |
| Ted Mapes | Stunts |
| Hugh Brown | Production Manager |
| Gene Garvin | Sound Recordist |
| Phyllis Dalton | Set Costumer |
| Dorothea Holt | Other |
| Basil Keys | Assistant Director |
| John P. Fulton | Visual Effects |
| Angus MacPhail | Additional Writing |
| Edward R. Morse | Casting |
| Frank Caffey | Production Manager |
| Farciot Edouart | Visual Effects |
| Sam Vitale | Assistant Editor |
| D.B. Wyndham-Lewis | Story |
| Vic Jones | Gaffer |
| Neil Binney | First Assistant Camera |
| Constance Willis | Technical Advisor |
| Neil Wheeler | Property Master |
| Dan Greenway | Makeup Artist |
| Tony Regan | Casting |
| Paul Franz | Sound Recordist |
| Ken Lobben | Still Photographer |
| Bobby Greene | Assistant Camera |
| Ralph Axness | Second Assistant Director |
| Abdelhaq Chraibi | Technical Advisor |
