"The Girl in the Fireplace" is the fourth episode of the second series of the British science fiction television series Doctor Who. It was first broadcast on BBC One on 6 May 2006. Written by Steven Moffat and directed by Euros Lyn, the episode is inspired by Audrey Niffenegger's novel The Time Traveler's Wife.

The second series of British science fiction programme Doctor Who began on 25 December 2005 with the Christmas special "The Christmas Invasion". A regular series of thirteen episodes was broadcast weekly in 2006, starting with "New Earth" on 15 April and concluding with "Doomsday" on 8 July. In addition, two short special episodes were produced; a Children in Need special and an interactive episode, as well as thirteen minisodes titled Tardisodes. It is the second series of the revival of the show, and the twenty-eighth season overall.