- Country: UK
- Genres: Drama
- Release: 1950-08-21
- Director: Gregory Ratoff
- Writers: Robert Thoeren , William Rose (I) (1914–1987) , Irène Némirovsky
- Language: English
- Stars: Edward G. Robinson , Peggy Cummins , Richard Greene , Nora Swinburne
- Runtime: 81 min
- Awards: N/A
- AKA: Dämon Uran , Noidankehässä (Finland) , Det farliga spelet (Sweden) , El mundo es mío (Mexico) , La pasión de su vida (Spain) , A Minha Filha Joy (Portugal, Portuguese Republic) , My Daughter Joy (United Kingdom) , Dämon Uran (Austria) , En fattig millionær (Denmark) , My Daughter Joy (South Africa) , My Daughter Joy , Operation X (United States of America) , Minha Filha! (Brazil) , I kori mou ki ego (Greece) , Operation X (Philippines) , Son grand amour (France, French Republic) , Mia figlia Joy (Italy)
- Plot: A business tycoon spoils his young daughter, but his relationship with his wife leaves much to be desired.
- IMDB:tt0042812
Operation X Cast · · · ALL
Gregory Ratoff
Director
Edward G. Robinson
George Constantin
Peggy Cummins
Georgette Constantin
Richard Greene
Larry
Nora Swinburne
Ava Constantin
Walter Rilla
Andreas
Finlay Currie
(1878–1968)
Sir Thomas McTavish
James Robertson Justice
Prof. Keval
Ronald Adam
Col. Fogarty
David Hutcheson
Annix
Gregory Ratoff
Marcos