Grayson James Allen (born October 8, 1995) is an American professional basketball player for the Milwaukee Bucks of the National Basketball Association (NBA). He played four years of college basketball at Duke University. Allen was drafted with the 21st overall pick in the 2018 NBA draft by the Utah Jazz, where he played for one season before being traded to the Memphis Grizzlies in July 2019. In August 2021, Allen was traded to the Bucks.