Marco Polo is the fourth serial of the British science fiction television series Doctor Who. It was first broadcast on BBC TV in seven weekly parts from 22 February to 4 April 1964. It was written by John Lucarotti and directed largely by Waris Hussein; John Crockett directed the fourth episode. The story is set in Yuan-era China in the year 1289, where the Doctor, his granddaughter Susan Foreman, and her teachers Ian Chesterton and Barbara Wright meet the Italian merchant-explorer Marco Polo and Mongolian Emperor Kublai Khan.

Doctor Who is a British science fiction television series broadcast by the BBC since 1963. The series, created by Sydney Newman, C. E. Webber and Donald Wilson, depicts the adventures of an extraterrestrial being called the Doctor, part of a humanoid species called Time Lords. The Doctor travels in the universe and in time using a time travelling spaceship called the TARDIS, which externally appears as a British police box. While travelling, the Doctor works to save lives and liberate oppressed peoples by combating foes. The Doctor often travels with companions.