William Denard Barton III (born January 6, 1991) is an American professional basketball player for the Washington Wizards of the National Basketball Association (NBA). He played college basketball for Memphis, where he was named the Conference USA Men's Basketball Player of the Year in 2012. He was selected 40th overall in the 2012 NBA draft by the Portland Trail Blazers and played for the Idaho Stampede of the NBA G League before being traded to the Denver Nuggets in 2015, where he eventually became their franchise leader in three-pointers made. He was traded to the Washington Wizards in 2022.