- Country: Greece
- Genres: Drama
- Release: 1968-03-25
- Director: Frederic Wakeman
- Writers: Frederic Wakeman
- Language: Greek
- Stars: Ellie Lambeti , Roger Browne , John Turner , Kostas Karras , Manos Katrakis , Kostas Baladimas
- Runtime: 110 min
- Awards: N/A
- AKA: Μια μέρα, ο πατέρας μου... (Greece) , One Day, My Daddy... (United Kingdom) , Mia mera, o pateras mou , One Day, My Daddy... (United States of America) , One Day, My Daddy... , One Day, My Father...
- Plot: During the Cold War, the daughter of the Prime Minister of an Eastern Bloc country is toying with the idea of defecting to the West. However, after a botched attempt to escape, she is apprehended by the authorities and is subjected to indoctrination in a psychiatric ward. The film is inspired by the defection to the U.S. of Joseph Stalin's daughter, Svetlana Alliluyeva.
- IMDB:tt0135549
One Day, My Daddy Cast
Frederic Wakeman
Director
Ellie Lambeti
Roger Browne
Luca
John Turner
Kostas Karras
Manos Katrakis
Leader
Kostas Baladimas