Also Known As:
- El hombre que sabía demasiado
- L'homme qui en savait trop
- Alfred Hitchcock's The Man Who Knew Too Much
- Der Mann, der zuviel wußte
- Mannen som visste för mycket
- O Homem Que Sabia Demais
- Az ember, aki túl sokat tudott
- Covjek koji je previse znao
- Czlowiek, który wiedzial za duzo
- De man die te veel wist
- De man die teveel wist
- En manos del destino
- Ha-Ish sh'Yada Yoter Me'dye
- L'uomo che sapeva troppo
- Manden der vidste for meget
- Mannen som visste for meget
- Mies joka tiesi liikaa
- O anthropos pou gnorize polla
- Tehlikeli Adam
- Alfred Hitchcock
- John Michael Hayes
- Charles Bennett
- D.B. Wyndham-Lewis
- Angus MacPhail
- James Stewart ... Dr. Benjamin McKenna
- Doris Day ... Josephine Conway McKenna
- Brenda De Banzie ... Lucy Drayton (as Brenda de Banzie)
- Bernard Miles ... Edward Drayton
- Ralph Truman ... Inspector Buchanan
- Daniel Gélin ... Louis Bernard (as Daniel Gelin)
- Mogens Wieth ... Ambassador
- Alan Mowbray ... Val Parnell
- Hillary Brooke ... Jan Peterson
- Christopher Olsen ... Hank McKenna
- Reggie Nalder ... Rien
- Richard Wattis ... Assistant Manager
- Noel Willman ... Woburn
- Alix Talton ... Helen Parnell
- Yves Brainville ... Police Inspector
- Carolyn Jones ... Cindy Fontaine
- Patrick Aherne ... Handyman
- Frank Albertson ... Worker at the taxidermist's
- Frank Atkinson ... Taxidermist
- John Barrard ... Taxidermist
- Betty Bascomb ... Edna
- Alexis Bobrinskoy ... Foreign Prime Minister
- Janet Bruce ... Box Office Woman
- Naida Buckingham ... Lady in Audience
- Clifford Buckton ... Sir Kenneth Clarke
- Barbara Burke ... Assassin's Companion
- Peter Camlin ... Headwaiter
- Abdelhaq Chraibi ... Arab
- Pauline Farr ... Ambassador's Wife
- Harry Fine ... Edington
- Bess Flowers ... Royal Albert Hall Attendee
- Alex Frazer ... Man
- Wolf Frees ... Aide to Prime Minister
- Milton Frome ... Guard
- Leo Gordon ... Chauffeur
- Walter Gotell ... Guard
- Bernard Herrmann ... Conductor / Himself
- Alfred Hitchcock ... Man in Morocco Marketplace
- Gladys Holland ... Bernard's Date at Restaurant
- George Howe ... Ambrose Chappell Sr
- Harold Kasket ... Butler
- Barry Keegan ... Patterson
- Lou Krugman ... Arab
- Lloyd Lamble ... General Manager of Albert Hall
- Donald Lawton ... Desk Clerk
- Enid Lindsey ... Lady Clarke
- Mayne Lynton ... Taxidermist
- Janet Macfarlane ... Lady in Audience
- Edward Manouk ... French Waiter
- Richard Marner ... Aide to Prime Minister
- John Marshall ... Butler
- Lewis Martin ... Detective
- Louis Mercier ... French Policeman
- Ralph Neff ... Henchman
- Leslie Newport ... Inspector at Albert Hall
- John O'Malley ... Uniformed Attendant
- Elsa Palmer ... Cook
- Liddell Peddieson ... Taxidermist
- Arthur Ridley ... Ticket Collector
- Mahin S. Shahrivar ... Arab Woman
- Eric Snowden ... Special Branch Officer
- Alma Taylor ... Box Office Woman
- Guy Verney ... Footman
- Anthony Warde ...
- Patrick Whyte ... Special Branch Officer
- Peter Williams ... Police Sergeant
- Richard Wordsworth ... Ambrose Chappell Jr
- Allen Zeidman ... Assistant Manager
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