Marcus Darrell Williams (born December 3, 1985) is an American professional basketball player who plays for Crvena zvezda of the Serbian League. Standing at 6 ft 3 in (1.91 m), he plays the point guard position. He was selected with the 22nd overall pick in the 2006 NBA draft by the New Jersey Nets. Prior to becoming professional player, he played collegiate basketball for the Connecticut Huskies.