The Dalek Invasion of Earth is the second serial of the second season in the British science fiction television series Doctor Who. Written by Terry Nation and directed by Richard Martin, the serial was broadcast on BBC1 in six weekly parts from 21 November to 26 December 1964. In the serial, the First Doctor, his granddaughter Susan Foreman, and teachers Ian Chesterton and Barbara Wright discover that the Earth in the 22nd century has been occupied by Daleks. They work with a human resistance group to stop the Daleks from mining out the Earth's core as part of their plan to pilot the planet through space.

The second season of British science fiction television series Doctor Who was originally broadcast on BBC1 between 1964 and 1965. The season began on 31 October 1964 with Planet of Giants and ended with The Time Meddler on 24 July 1965. Like the first season, production was overseen by the BBC's first female producer Verity Lambert. Story editor David Whitaker continued to handle the scripts and stories during early production, handing over to Dennis Spooner as the season began to air; Spooner subsequently left his role by the season's end, and was replaced by Donald Tosh for its final serial. By the season's end, Lambert was the only remaining production member from the team responsible for creating the series.