Doomsday is a 2008 science fiction action film written and directed by Neil Marshall. The film takes place in the future in Scotland, which has been quarantined because of a deadly virus. When the virus is found in London, political leaders send a team led by Major Eden Sinclair (Rhona Mitra) to Scotland to find a possible cure. Sinclair's team runs into two types of survivors: marauders and medieval knights. Doomsday was conceived by Marshall based on the idea of futuristic soldiers facing medieval knights. In producing the film, he drew inspiration from various movies, including Mad Max, Escape from New York and 28 Days Later.

Marshall had a budget three times the size of his previous two films, The Descent and Dog Soldiers, and the director filmed the larger-scale Doomsday in Scotland and South Africa. The film was released in the United States and Canada on 14 March 2008 and in the United Kingdom on 9 May 2008. It received mixed reviews from critics, who praised the casting, pacing, narrative, and homage to previous films, but criticized the plot holes, character development, confusing editing, and excessive gore. The film grossed $22 million worldwide, making it a box office bomb.