Ornstein

Ornstein may refer to:


 * Axel Ornstein (b. 1952), Swedish chess master
 * Donald Samuel Ornstein (b. 1934), American mathematician
 * Jonathan G. Ornstein, CEO of Mesa Air Group, Inc.
 * Leo Ornstein (1895–2002), Russian-American composer
 * Leonard Salomon Ornstein (1880–1941), Dutch physicist known for the Ornstein–Zernike equation and the Ornstein–Uhlenbeck process
 * Michael Marisi Ornstein (b. 1963), American actor
 * Norman J. Ornstein (born 1948), American political scientist
 * Robert Ornstein (b. 1942), American psychologist
 * Severo Ornstein (born 1930), American computer scientist and son of Leo Ornstein

In video games

 * Dragon Slayer Ornstein, an enemy boss in the game Dark Souls.