 | James Stewart | .... | Ben McKenna |
 | Doris Day | .... | Jo McKenna |
 | Brenda de Banzie | .... | Lucy Drayton |
 | Bernard Miles | .... | Mr. Drayton |
 | Ralph Truman | .... | Buchanan |
 | Daniel Gelin | .... | Louis Bernard |
 | Mogens Wieth | .... | Ambassador |
 | Alan Mowbray | .... | Val Parnell |
 | Hillary Brooke | .... | Jan Peterson |
 | Christopher Olsen | .... | Hank McKenna |
 | Reggie Nalder | .... | The Assassin |
 | Richard Wattis | .... | Assistant Manager |
 | Noel Willman | .... | Woburn |
 | Alix Talton | .... | Helen Parnell |
 | Yves Brainville | .... | Police Inspector |
 | Patrick Aherne | .... | Handyman (uncredited) |
 | Frank Atkinson | .... | Taxidermist (uncredited) |
 | John Barrard | .... | Taxidermist (uncredited) |
 | Betty Bascomb | .... | Edna (uncredited) |
 | Alexi Bobrinskoy | .... | Foreign Prime Minister (uncredited) |
 | Janet Bruce | .... | Box Office Woman (uncredited) |
 | Naida Buckingham | .... | Lady in Audience (uncredited) |
 | Clifford Buckton | .... | Sir Kenneth Clarke (uncredited) |
 | Barbara Burke | .... | Assassin's Girlfriend (uncredited) |
 | Peter Camlin | .... | Headwaiter (uncredited) |
 | Abdelhaq Chraibi | .... | Arab (uncredited) |
 | Pauline Farr | .... | Ambassador's Wife (uncredited) |
 | Harry Fine | .... | Edington (uncredited) |
 | Alex Frazer | .... | Man (uncredited) |
 | Milton Frome | .... | Guard (uncredited) |
 | Leo Gordon | .... | Chauffer (uncredited) |
 | Walter Gotell | .... | Guard (uncredited) |
 | Bernard Herrmann | .... | Himself (uncredited) |
 | Alfred Hitchcock | .... | Man in Morocco Marketplace (uncredited) |
 | Gladys Holland | .... | Bernard's Girlfriend (uncredited) |
 | George Howe | .... | Ambrose Chappell Sr (uncredited) |
 | Barbara Howitt | .... | Soloist in Albert Hall Sequence (uncredited) |
 | Carolyn Jones | .... | Cindy Fontaine (uncredited) |
 | Harold Kasket | .... | Butler (uncredited) |
 | Barry Keegan | .... | Patterson (uncredited) |
 | Lou Krugman | .... | Arab (uncredited) |
 | Lloyd Lamble | .... | General Manager of Albert Hall (uncredited) |
 | Donald Lawton | .... | Desk Clerk (uncredited) |
 | Enid Lindsey | .... | Lady Clarke (uncredited) |
 | Mayne Lynton | .... | Taxidermist (uncredited) |
 | Janet Macfarlane | .... | Lady in Audience (uncredited) |
 | Edward Manouk | .... | French Waiter (uncredited) |
 | John Marshall | .... | Butler (uncredited) |
 | Lewis Martin | .... | Detective (uncredited) |
 | Louis Mercier | .... | French Policeman (uncredited) |
 | Ralph Neff | .... | Henchman (uncredited) |
 | Leslie Newport | .... | Inspector at Albert Hall (uncredited) |
 | John O'Malley | .... | Uniformed Attendant (uncredited) |
 | Elsa Palmer | .... | Woman Cook (uncredited) |
 | Liddell Peddieson | .... | Taxidermist (uncredited) |
 | Wolf Priess | .... | Aide to Foreign Prime Minister (uncredited) |
 | Arthur Ridley | .... | Ticket Collector (uncredited) |
 | Mahin S. Shahrivar | .... | Arab Woman (uncredited) |
 | Eric Snowden | .... | Special Branch Officer (uncredited) |
 | Alma Taylor | .... | Box Office Woman (uncredited) |
 | Guy Verney | .... | Footman (uncredited) |
 | Anthony Warde | .... | French Policeman (uncredited) |
 | Patrick Whyte | .... | Special Branch Officer (uncredited) |
 | Peter Williams | .... | Police Sergeant (uncredited) |
 | Richard Wordsworth | .... | Ambrose Chappell Jr (uncredited) |
 | Allen Zeidman | .... | Assistant Manager (uncredited) |