William "Bill" Lustig (born February 1, 1955, in The Bronx, New York) is an American film director^[1] and producer who has worked primarily in the horror film genre. He is the nephew of former middleweight champion Jake LaMotta.

As a film director, Lustig is best known for his low-budget horror films Maniac,^[2] Vigilante, Uncle Sam, and the Maniac Cop series.^[3] Lustig has also worked as an actor playing small roles in his own films as well as in films by Sam Raimi, most notably as a fake shemp in Army of Darkness and a dockworker in Darkman.^[4] As of 2009, Lustig is the CEO of Blue Underground; an entertainment company specializing in the release of obscure films and exploitation films on DVD.^[5] He also produced a remake of his film Maniac (2012) and is rumoured to be producing a new upcoming Maniac Cop with Nicolas Winding Refn.^[6]