"A Christmas Carol" is an episode of the British science fiction television programme Doctor Who. It is the sixth Doctor Who Christmas special since the programme's revival in 2005, and it was broadcast on 25 December 2010 on both BBC One and BBC America, making it the first episode to premiere on the same day in both the United Kingdom and United States. It was written by Steven Moffat and directed by Toby Haynes.

Steven William Moffat is a Scottish television writer, television producer and screenwriter. He is best known for his work as the second showrunner and head writer of the 2005 revival of the BBC sci-fi television series Doctor Who and co-creating and co-writing the contemporary crime drama television series Sherlock, based on Sir Arthur Conan Doyle's Sherlock Holmes stories. In the 2015 Birthday Honours, Moffat was appointed Officer of the Order of the British Empire (OBE) for his services to drama.