William Schlumberger (March 25, 1799 – February 20, 1838)[1] was an Alsatian chess master. He is known to have taught Pierre Charles Fournier de Saint-Amant to play chess and as the operator of The Turk, a chess-playing machine which was purported to be an automaton. It was Bavarian musician and showman Johann Nepomuk Mälzel who hired him to operate The Turk. Schlumberger acted as the Turk's director in Europe and in the United States until his death from yellow fever in 1838.