Amari Williams (born 28 January 2002) is a British professional basketball player for the Boston Celtics of the National Basketball Association (NBA), on a two-way contract with the Maine Celtics of the NBA G League. He played college basketball for the Drexel Dragons and the Kentucky Wildcats. Williams was selected by the Orlando Magic with the 46th overall pick in the second round of the 2025 NBA draft, but was immediately traded to the Celtics.