Bronstein is the surname of:
Lev Davidovich Bronstein (Leon Trotsky) (1879–1940)David Bronstein (1924–2006), Ukrainian chess grandmasterHila Bronstein (born 1983), German singer/songwriterMartin Bronstein, Canadian actorMatvei Bronstein (1906–1938), Soviet theoretical physicistOlga Kameneva (née Bronstein) (1881–1941), sister of Leon TrotskyPhil Bronstein, editor of the San Francisco ChronicleRaphael Bronstein (1895–1988), Noted violin performer and teacher