Boy A is a 2007 British drama film directed by John Crowley, from a screenplay by Mark O'Rowe, based on the 2004 novel of the same name by Jonathan Trigell. The film stars Andrew Garfield in his film debut as Jack Burridge (né Eric Wilson), who is re-entering society under a new name in Manchester after having served 14 years in a juvenile prison; and Peter Mullan as Terry, Jack's caseworker. The novel is noted for similarities to the James Bulger case, whose offenders were released around the time of its publication.

Boy A had its world premiere at the 32nd Toronto International Film Festival on 8 September 2007. It was released as a television film in the United Kingdom, airing on Channel 4 on 26 November 2007, and was theatrically released in the United States by The Weinstein Company on 23 July 2008. The film received generally positive reviews from critics, with Garfield winning a British Academy Television Award for his performance.