The Wheel in Space is the seventh and final serial of the fifth season in the British science fiction television series Doctor Who, which originally aired in six weekly parts from 27 April to 1 June 1968.

The fifth season of British science fiction television series Doctor Who began on 2 September 1967 with the first story of season 5 The Tomb of the Cybermen and ended on 1 June 1968 with The Wheel in Space. Only 22 out of 40 episodes are held in the BBC archives; 18 remain missing. As a result, only 2 serials exist entirely. However, The Abominable Snowmen, The Ice Warriors, The Web of Fear, and Fury from the Deep have had their missing episodes reconstructed using animation.