The Seeds of Death is the fifth serial of the sixth season of the British science fiction television series Doctor Who. Written by Brian Hayles and an uncredited Terrance Dicks and directed by Michael Ferguson, it originally aired in six weekly parts on BBC1 from 25 January to 1 March 1969. It sees the return of the Ice Warriors, previously introduced by Hayles in the 1967 serial The Ice Warriors.

The sixth season of British science fiction television series Doctor Who began on 10 August 1968 with the first story of season 6 The Dominators and ended Patrick Troughton's reign as the Doctor with its final story The War Games. Only 37 out of 44 episodes are held in the BBC archives; 7 remain missing. As a result, 2 serials are incomplete: only episode 2 of the 6-part story The Space Pirates still exists, while The Invasion has had its two missing episodes reconstructed using animation.