Doomwatch is a 1972 British science fiction film directed by Peter Sasdy and starring Ian Bannen, Judy Geeson and John Paul. It was based on the BBC television series Doomwatch (1970–1972). The screenplay was written by Clive Exton. In the United States it was released by Embassy Pictures.

Ian Edmund Bannen was a Scottish actor with a long career in film, on stage, and on television. He was nominated for an Academy Award for his performance in The Flight of the Phoenix (1965), the first Scottish actor to receive the honour, as well as two BAFTA Film Awards for his performances in Sidney Lumet's The Offence (1973) and John Boorman's Hope and Glory (1987).