Oh! What a Lovely War

Oh! What a Lovely War
Theatrical release poster
Directed by	Richard Attenborough
Produced by	Len Deighton Brian Duffy
Written by	Len Deighton (uncredited)
Starring	Maggie Smith Dirk Bogarde Phyllis Calvert Jean Pierre Cassel John Clements John Gielgud Jack Hawkins Kenneth More Laurence Olivier Michael Redgrave Vanessa Redgrave Ralph Richardson Susannah York John Mills
Cinematography	Gerry Turpin
Edited by	Kevin Connor
Production company	Accord Productions
Distributed by	Paramount Pictures
Release date	10 March 1969 (UK release)
Running time	144 min
Country	United Kingdom
Language	English

Oh! What a Lovely War is a 1969 British musical film directed by Richard Attenborough (in his directorial debut), with an ensemble cast including Maggie Smith, Dirk Bogarde, John Gielgud, John Mills, Kenneth More, Laurence Olivier, Jack Hawkins, Corin Redgrave, Michael Redgrave, Vanessa Redgrave, Ralph Richardson, Ian Holm, Paul Shelley, Malcolm McFee, Jean-Pierre Cassel, Nanette Newman, Edward Fox, Susannah York, John Clements, Phyllis Calvert and Maurice Roëves.

The film is based on the stage musical Oh, What a Lovely War!, originated by Charles Chilton as a radio play, The Long Long Trail in December 1961, and transferred to stage by Gerry Raffles in partnership with Joan Littlewood and her Theatre Workshop in 1963.

The title is derived from the music hall song Oh! It's a Lovely War, which is one of the major numbers in the film.