Tremaine is a Cornish language given or surname. Notable people with this name include:
F. Orlin Tremaine, science fiction editorJeff Tremaine, film and television producerMarilyn Tremaine, computer scientistMorris S. Tremaine, NYS Comptroller (1927–1941)Scott Tremaine, astrophysicistTremaine Fowlkes, basketball playerTrey Songz, was born Tremaine Aldon NeversonTremaine Philp, Entrepreneur, SailorFictional people:
Lady Tremaine, character in the 1950 film CinderellaPrescott Tremaine, character from David Weber's "Honorverse" series of novelsTremaine Gidigbi, character from the television series Footballers' Wives