Hornstein is a surname. Notable people with the surname include:
Frank Hornstein (born 1959), American politician
Harvey A. Hornstein, PhD, author of Brutal Bosses and their Prey: How to Identify and Overcome Abuse in the Workplace (1996). (See Workplace bullying: Further reading)
Norbert Hornstein, American linguist
Marty Hornstein, American film producer
Michal Hornstein (born 1920), Canadian businessman, art collector and philanthropist
Michael Hornstein (born 1962), German jazz saxophonist
