Torchwood is a science fiction crime 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 with supernatural occurances.

An in-house BBC Wales production for digital television station BBC Three, it is the first television spin-off from Doctor Who since the undeveloped K-9 and Company series, of which only a 1981 pilot was produced.

The series is set in Cardiff, some time after the Doctor Who series two finale, setting it in 2007 and later in early 2008 ahead of its actual air date. It follows the Wales branch of a covert agency called the Torchwood Institute which investigate extraterrestrial incidents on Earth and scavenges alien technology for its own use. To paraphrase Torchwood Three's commander-in-chief, Captain Jack Harkness, the organisation is beyond the government, the police, and the United Nations. Their public perception is as merely a 'special ops' group.

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