Stephen J. Flesch (born May 23, 1967) is an American professional golfer who currently plays on the PGA Tour Champions.

Flesch was born in Cincinnati, Ohio, and attended Covington Catholic High School in Park Hills, Kentucky.

His first win on the PGA Tour was the 2003 HP Classic of New Orleans, but is probably best known for his come-from-behind victory at the 2004 Bank of America Colonial in Fort Worth, Texas.

Playing in the penultimate pairing on breezy Sunday, Flesch posted a 78 to finish six strokes back, tied for fifth.

This strong showing in a major tournament strengthened his world ranking by 28 slots, improving it to number 79.