Winter King may refer to:
A derisive sobriquet applied to Frederick V of the Palatinate A sobriquet sometimes applied by historians to Henry VII of England The Winter King (character), a character in the TV series Adventure Time: Fionna and Cake "The Winter King" (episode), a 2023 episode of the TV series Adventure Time: Fionna and Cake The Winter King (Cornwell novel), novel of The Warlord Chronicles trilogy by Bernard Cornwell The Winter King (TV series), British Arthurian fiction television series, based on the Cornwell novels The Winter King (Carl novel), a 1986 novel by Lillian Stewart Carl 'Winter King', a cultivar of Crataegus viridis (green hawthorn)
See also "Winter's King", a science fiction short story Holly King and Oak King with the Holly King also known as the Winter King.