Doctor may refer to:
- Doctors - the merchants in Assassin's Creed II, Assassin's Creed: Brotherhood, and Assassin's Creed: Revelations who heal people and sell medicine and poison.
- Doctor (Savonarola's lieutenant) - One of Girolamo Savonarola's nine lieutenants, and one of Ezio Auditore da Firenze's targets during the Bonfire of the Vanities.
- Doctor (Animi Avatar) - An Animi Avatar in Assassin's Creed: Brotherhood.
- Ottoman Doctor - An Animi Avatar in Assassin's Creed: Revelations.
- Doctor (Providence) - A medical professional commissioned by the Royal Navy to study maritime sickness aboard the Providence in Assassin's Creed III.