Joseph Paul Sindelar (born March 30, 1958) is an American professional golfer who currently plays on the Champions Tour.

Sindelar was born in Fort Knox, Kentucky, while his father was serving in the Army, but has lived in New York for most of his life. He was a childhood friend and high school golf rival of fellow PGA Tour player Mike Hulbert.

Sindelar attended the Ohio State University in Columbus, Ohio, and while there was a distinguished member of the school's golf team. He was a three-time All-American, member of the 1979 NCAA Championship team, and Ohio State's Athlete of the Year in 1981. He was inducted into the Ohio State Varsity O Hall of Fame in 1992.

Sindelar turned pro in 1981. He won seven PGA Tour events, and was one of the most consistent players on the Tour with more than 80 top-10 finishes in his career. He played on the 1991 World Cup team. His best finish in a major was T6 at the 1992 U.S. Open. In 1988, Sindelar had ten top-10 finishes including two victories: The International and the Honda Classic. In 2006, he scored a double eagle (albatross), in the PGA Championship — only the third time such a score had been recorded in that competition's history.

Since turning 50 in March 2008, Sindelar has played on the Champions Tour where he has over 30 top-10 finishes in 2008 including four second-place finishes with a playoff loss at the 2010 Liberty Mutual Legends of Golf.

Sindelar currently lives in Horseheads, New York. His son, Jamie, is also a professional golfer.