Malcolm McDowell (born 13 June 1943) is a British actor. McDowell's career has spanned more than forty years and includes notable roles in if...., A Clockwork Orange, O Lucky Man!, Star Trek Generations, the TV serial Our Friends in the North, Entourage, Heroes, Metalocalypse, and the 2007 remake of Halloween.

McDowell was born Malcolm John Taylor in Horsforth, Leeds, the son of Edna (née McDowell), a hotelier, and Charles Taylor, a pub owner. However, six weeks after McDowell was born, his family relocated to the east coast of Yorkshire because his father was part of the Royal Air Force.

McDowell began his professional life serving drinks in his parents' pub and then as a coffee salesman (the latter job providing inspiration for the movie O Lucky Man!). While enrolled in Cannock House School, he began taking acting classes, and eventually secured work as an extra with the Royal Shakespeare Company. McDowell made his screen debut as school rebel Mick Travis in If.... (1968) by British director Lindsay Anderson. This was followed by Figures in a Landscape (1970) and The Raging Moon (1971). His performance in if.... caught the attention of Stanley Kubrick, who cast McDowell as the lead in A Clockwork Orange. He won great acclaim (nominated for Best Actor by the New York Film Critics Circle) for his role as Alex, a young psychopath brainwashed by an authoritarian British government.