John Riegger (born June 13, 1963) is an American professional golfer who has played on the PGA Tour, the Nationwide Tour, and the Champions Tour.

Riegger was born in Metropolis, Illinois. He graduated from Lamar University in 1985 and turned professional that year.

Riegger played on the PGA Tour in 1987, 1992, 1998, 2001-04, 2006, and 2008. He played on the Nationwide Tour in 1991, 1994, 1999-2000, 2007, 2009-10. He has won twice on the Nationwide Tour. His best finish on the PGA Tour was a T5 at the 2006 John Deere Classic.