Kenneth Wootson Duke (born January 29, 1969) is an American professional golfer.

Duke was born in Hope, Arkansas. After turning professional in 1994, Duke first qualified for the PGA Tour in 2004, but failed to keep his card and returned to the Nationwide Tour. In 2006 he finished at the top of the Nationwide Tour money list and won the BMW Charity Pro-Am at The Cliffs, which regained his playing rights on the PGA Tour for 2007.

After a slow start to the 2007 season, Duke hit a run of good form in the spring, with four consecutive top 10 finishes, elevating Duke into the top 100 of the Official World Golf Rankings.