- Country: UK
- Genres: Drama
- Release: 1940-04-29
- Director: Basil Dean
- Writers: John Galsworthy , Basil Dean , Graham Greene
- Language: English
- Stars: Vivien Leigh , Leslie Banks , Laurence Olivier (1907–1989) , Francis L. Sullivan , David Horne , William Dewhurst , Frederick Lloyd , Robert Newton , Esme Percy , Elliott Mason
- Runtime: 72 min
- Awards: N/A
- AKA: 21 Days , 21 Days Together (United States of America) , 21 dni (Poland) , 21 день , Three Weeks Together (United States of America) , Fatalidad (Venezuela) , Fatalità (Italy) , The First and the Last (United States of America) , 21 Days (United Kingdom) , Vingt-et-un jours ensemble (France, French Republic) , Veintiún días juntos (Spain) , 21 Dias (Portugal, Portuguese Republic) , 21 Days (Canada) , Tres semanas juntos (Mexico) , Mannen och hans samvete (Sweden) , 3 Semanas de Loucura (Brazil) , Twenty-One Days , Twenty-One Days Together (United States of America) , Três Semanas de Loucura (Brazil)
- Plot: After Larry Darrent accidentally kills his lover's blackmailing husband, someone else is arrested for the crime. Larry and Wanda have just three weeks together before the trial and if the man is found guilty then Larry will give himself up and prevent an innocent man going to the gallows.
- IMDB:tt0032179
21 Days Together Cast · · · ALL
Basil Dean
Director
Vivien Leigh
Wanda
Laurence Olivier
(1907–1989)
Larry Durrant
Leslie Banks
Keith Durrant
Francis L. Sullivan
Mander
David Horne
Beavis
William Dewhurst
Lord Chief Justice
Frederick Lloyd
Swinton
Robert Newton
Tolly
Esme Percy
Henry Wallen
Elliott Mason
Frau Grunlich
Arthur Young
Ascher
Hay Petrie
John Aloysius Evan
Meinhart Maur
Carl Grunlich
Morris Harvey
Alexander MacPherson
Lawrence Hanray
Solicitor
Fred Groves
Barnes
Aubrey Mallalieu
Magistrate
Muriel George
Ma
Bryan Herbert
Man with Barrel Organ
Wallace Lupino
Bert
Andreas Malandrinos
Cafe Tyrol Waiter
Victor Rietti
Antonio
John Warwick
(uncredited)