Halloween III or Halloween 3 may refer to:
- Halloween III: Season of the Witch (1982), the only film in the Halloween franchise unrelated to the story of Michael Myers
- Halloween III, the novelization of the 1982 film
- Halloween III: The Devil's Eyes, the second installment in the Chaos! Comics series
- Halloween 4: The Return of Michael Myers, the third film in the 4-6 Timeline
- Halloween H20: Twenty Years Later, the third film in the H20 Timeline
- Halloween Returns, the cancelled third film in Rob Zombie's reboot of the Halloween series
- Halloween Kills, the third film in the 2018 Timeline
