Torchwood is a British science fiction drama television programme, created by Russell T Davies and starring John Barrowman and Eve Myles. It deals with the machinations and activities of the Cardiff branch of the fictional Torchwood Institute, who deal mainly with incidents involving extraterrestrials. An initial 13-part series was commissioned by the BBC as a spin-off from the 2005 revival of the long-running science fiction programme Doctor Who with which it is closely interlinked.

The programme is produced in-house by BBC Wales, where Head of Drama at that time Julie Gardner serves as executive producer alongside Davies. The first two episodes of Series 1 of Torchwood premiered on 22 October 2006 on BBC Three and BBC HD. Series 2 premiered on BBC Two and BBC HD on 16 January 2008. A third series has been confirmed, currently set to be a five-part miniseries airing over a period of a week, and will air on BBC One.