Britannia Hospital is a 1982 British black comedy film, directed by Lindsay Anderson, which targets the National Health Service and contemporary British society. It was entered into the 1982 Cannes Film Festival and Fantasporto.

Britannia Hospital is the final part of Anderson's trilogy of films, written by David Sherwin, that follow the adventures of Mick Travis (portrayed by Malcolm McDowell) as he travels through a strange and sometimes surreal Britain. From his days at boarding school in if.... (1968) to his journey from coffee salesman to film star in O Lucky Man! (1973), Travis's adventures finally come to an end in Britannia Hospital, which sees him as a muckraking reporter investigating the bizarre activities of Professor Millar, played by Graham Crowden, with whom he had had an encounter in O Lucky Man. All three films have characters in common. Some of the characters from if.... that did not turn up in O Lucky Man! return for Britannia Hospital. The film also features Leonard Rossiter, Joan Plowright, Jill Bennett, Marsha Hunt, Fulton Mackay, Vivian Pickles, Richard Griffiths, Arthur Lowe, and Mark Hamill.

The absurdities of human behaviour as we move into the twenty-first century are too extreme—and too dangerous—to permit us the luxury of sentimentalism or tears. But by looking at humanity objectively and without indulgence, we may hope to save it. Laughter can help.