The 39 Steps is a 2008 British television adventure thriller feature-length adaptation of the 1915 John Buchan novel The Thirty-Nine Steps produced by the BBC. It was written by Lizzie Mickery, directed by James Hawes, and filmed on location in Scotland, starring Rupert Penry-Jones, Lydia Leonard, David Haig, Eddie Marsan, and Patrick Malahide. Following three screen versions of the novel and the 1952 and 1977 television adaptations of The Three Hostages, Penry-Jones became the sixth actor to portray Hannay on screen. This adaptation is set on the eve of the First World War and sees mining engineer Richard Hannay caught up in an espionage conspiracy following the death of a British spy in his flat.

The single drama was first shown on BBC One and BBC HD on 28 December 2008 as part of BBC One's Christmas 2008 line-up, and it was the most watched programme of the day. Compared to Alfred Hitchcock's 1935 film, it received mostly negative reviews from the press. The production was criticised for its historical inaccuracies, particularly its use of anachronistic props.