Watership Down is a 1978 British animated adventure-drama film, written, produced and directed by Martin Rosen and based on the 1972 novel by Richard Adams. It was financed by a consortium of British financial institutions and was distributed by Cinema International Corporation in the United Kingdom. Released on 19 October 1978, the film was an immediate success and it became the sixth-most popular film of 1979 at the UK box office.

It features the voices of John Hurt, Richard Briers, Harry Andrews, Simon Cadell, Nigel Hawthorne and Roy Kinnear, among others, and was the last film work of Zero Mostel, as the voice of Kehaar the gull. The musical score was by Angela Morley and Malcolm Williamson. Art Garfunkel's hit song "Bright Eyes" was written by songwriter Mike Batt. Since release, the film has gained a cult following.