Justin Lamar Anderson (born November 19, 1993) is an American professional basketball player for the Fort Wayne Mad Ants of the NBA G League. He played college basketball for the Virginia Cavaliers before being selected with the 21st overall pick in the 2015 NBA draft by the Dallas Mavericks. After one and a half seasons with the Mavericks, Anderson was traded to the Philadelphia 76ers in February 2017. In July 2018, he was traded to the Atlanta Hawks, and then played for the Brooklyn Nets in 2020.