Keith Carlton Fergus (born March 3, 1954) is an American professional golfer who has played on the PGA Tour, the Nationwide Tour and the Champions Tour.
Fergus was born in Temple, Texas. He started playing golf at age 8. In high school, he played football and basketball but enjoyed practicing golf more than the other sports. He attended and was a member of the golf team at the University of Houston, where he was a 3-time All American and runner-up to Jay Haas at the 1975 NCAA Championship. He turned pro in 1976.
Fergus had his best years on the PGA Tour in the early 1980s. During his PGA career, he had over 40 top-10 finishes and won three events. His best finish in a major was a T-3 at the 1980 U.S. Open; he also had a T-4 at the 1981 PGA Championship. He began using the long putter in 1988. Fergus took a break from the tour in 1988 when he accepted the head golf coaches job at his alma mater, the University of Houston, a position he held until 1994.