*Sub-Zero is a fictional character in the Mortal Kombat fighting game franchise by Midway Games and NetherRealm Studios. A warrior from the fictional Lin Kuei clan, the character is defined by his ability to control ice in many forms.

He is the only fighter to appear in every main installment of the series, along with being featured as the protagonist of the action-adventure spin-off Mortal Kombat Mythologies: Sub-Zero (1997).

In the games, the mantle of Sub-Zero is used by brothers Bi-Han and Kuai Liang. Bi-Han debuted as Sub-Zero in the original 1992 game before appearing in subsequent installments as Noob Saibot. Kuai Liang took over the role in Mortal Kombat II (1993) and served as the franchise's main Sub-Zero up to Mortal Kombat 11 (2019).*