- Country: UK
- Genres: Drama
- Release: 1950-07-01
- Director: Lewis Gilbert
- Writers: David Evans , Ronald Marsh
- Language: English
- Stars: Pat Kirkwood , Jack Watling , Joy Shelton , Sydney Tafler , Thora Hird , Humphrey Lestocq , Gordon McLeod , Edith Sharpe , Harry Fowler , Danny Green (I) (1903–1973)
- Runtime: 78 min
- Awards: N/A
- AKA: Once a Sinner , Una vez que un Sinner (Spain) , Once a Sinner (United Kingdom) , Once a Sinner (United States of America)
- Plot: A lowly bank clerk marries a good time girl but she two-times him for her old crooked boyfriend.
- IMDB:tt0042806
Once a Sinner Cast · · · ALL
Lewis Gilbert
Director
Pat Kirkwood
Irene James (as Patricia Kirkwood)
Jack Watling
John Ross
Joy Shelton
Vera Lamb
Sydney Tafler
Jimmy Smart
Thora Hird
Mrs. James
Humphrey Lestocq
Lewis Canfield
Gordon McLeod
Mr. Ross
Edith Sharpe
Mrs. Ross
Harry Fowler
Bill James
Danny Green
(I)
(1903–1973)
Ticker James
Stuart Lindsell
Inspector Rance
Olive Sloane
Lil
George Street
Bridges
Rose Howlett
Mrs. Lamb
Charles Paton
Mr. Lamb
Stuart Latham
Charlie
Cameron Hall
Mr. Barker
Norman Williams
Barman
Nora Gordon
Mrs. Barker (uncredited)
Ann Sullivan
Bus Conductress (uncredited)