William August Kratzert III (born June 29, 1952) is an American professional golfer and sportscaster, who has played on both the PGA Tour and the Champions Tour.

Kratzert was born in Quantico, Virginia when his father was in the service but spent most of his youth in Fort Wayne, Indiana, where he attended Elmhurst High School. His father was head pro for over 20 years at the Fort Wayne Country Club. Kratzert won the Indiana State Amateur at age 16. He attended the University of Georgia in Athens, Georgia and was a distinguished member of the golf team - an All-American in 1973 and 1974. Kratzert graduated with a Bachelor of Business Administration (BBA) degree in 1974. He turned pro in that same year. Kratzert, after two failed attempts at earning his Tour card, quit golf and worked as a forklift operator. After eight months at that job, Kratzert returned to golf and succeeded on his third attempt in 1976 to get his PGA Tour card.

Kratzert won four PGA Tour events in his career. His most successful years in professional golf were 1977-1980 when he finished in the top-12 on the money list in three of those 4 years. Kratzert's best year for majors was 1978, when he finished with a T-5 in The Masters and a T-6 in the U.S. Open. His career earnings exceed $1.4 million. He continued to play on the PGA Tour until 1997, when he went to work as a television golf commentator.

Since turning 50 in June 2002, Kratzert has played some on the Champions Tour; his best finish in this venue is T10 at the 2003 Royal Caribbean Golf Classic.

The main focus of his work continues to be as an on-course reporter for ESPN and Turner Sports. He has also worked with SiriusXM PGA Tour Radio and pgatour.com.

During the 2013 PGA Championship, CBS on-course reporter Peter Kostis was unable to work due to his recovery from cancer surgery. Kratzert, already on site for his Turner Sports duties, filled in on CBS's weekend telecasts. When Mark Rolfing was given a week off from his NBC duties at the 2014 Hero World Challenge, Kratzert was chosen to fill in.

Kratzert was inducted into the Indiana Golf Hall of Fame in 1993. He lives in Ponte Vedra Beach, Florida with his wife and three children. His sister, Cathy Gerring, is also a professional golfer and has won three times on the LPGA Tour.