List of Doctor Who serials

Doctor Who is a British science fiction television programme produced by the BBC. As of 25 December 2016^[update], 827 episodes of Doctor Who have aired, concluding the ninth series. This includes one television movie, multiple specials, and encompasses 264 stories over 35 seasons. Additionally, four charity specials and two animated serials have also been aired. The show's high episode count resulted in Doctor Who holding the world record for the highest number of episodes for a science-fiction programme.

Doctor Who ceased airing in 1989 and began again in 2005. Each story in the original series (1963–1989) is a multi-episode serial, with two exceptions: the 1965 cutaway episode "Mission to the Unknown" and the 20th anniversary story The Five Doctors. The characters in the column after the serial titles indicate the code used by the production team to designate the serial, where applicable, and are followed either by the titles of the individual episodes where given or by the number of episodes otherwise. During the early seasons of the programme, and occasionally through its run, most serials were linked together; usually one story would lead directly into the next. Starting with the 2005 revival, the production team abandoned the traditional serial format for a largely self-contained episodic format with occasional multi-part stories and loose story arcs.

Due to the BBC's 1970s junking policy, 97 episodes from the 1960s are missing, with the result that 26 serials are incomplete, although all of these still exist as audio recordings, and some have been reconstructed. In the first two seasons and most of the third, each episode of a serial had an individual title; no serial had an overall on-screen title until The Savages. The serial titles given below are the most common title for the serials as a whole, used in sources such as the Doctor Who Reference Guide and the BBC's classic episode guide, and are generally those used for commercial release. The practice of individually titled episodes resurfaced with the show's 2005 revival, when Doctor Who's serial nature was abandoned in favour of an episodic format.

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