Trainer is a surname. Notable people with the surname include:
Bob Trainer (1927–1982), Australian rules footballer David Trainer, American television director David Trainer (1814–1890), American textile manufacturer Douglas Trainer, former president of the National Union of Students of the United Kingdom Harry Trainer (1872–?), Welsh international footballer Jack Trainer, a character in the 2022 action-adventure comedy film The Lost City James Trainer (1863–1915), Welsh association football player of the Victorian era Joe Trainer (born 1968), American football coach and former player John Trainer (born 1943), former Australian politician. Marie Trainer (born 1940s), former mayor of Haldimand County, Ontario, Canada Melissa Trainer (born 1978), American astrobiologist Stephen Trainer, Scottish professional association footballer Ted Trainer, an Australian academic, author, and an advocate Todd Trainer, drummer for the band Shellac
Fictional characters Carolyn Trainer, a supervillain from Marvel Comics, also known as Lady Octopus Jack Trainer, a character played by Harrison Ford in the 1988 film Working Girl
See also Trainer (disambiguation)