Marcus Banks, American basketball player
Arthur Lemarcus "Marcus" Banks III (born November 19, 1981) is an American former professional basketball player.

Banks is 6 ft 2 in (1.88 m) tall and 205 lb (93 kg). He played college basketball at the UNLV with the Runnin' Rebels, where he was Co-Defensive Player of the Year as a senior. He was selected with the thirteenth pick in the first round of the 2003 NBA draft by the Memphis Grizzlies, then traded to the Boston Celtics, along with Kendrick Perkins.