Sean M. O'Hair (born July 11, 1982) is an American professional golfer.

O'Hair was born in Lubbock, Texas. Unlike the vast majority of contemporary American professional golfers, O'Hair did not go to college. He turned professional in 1999 after his junior year at high school at Brophy College Preparatory in Phoenix, Arizona under the direction of his father, Marc O'Hair, who sold his share of the family shutter business in Lubbock for $2.75 million to develop Sean into a touring pro. The elder O'Hair moved the family to Florida and enrolled Sean in the David Leadbetter Golf Academy.

A featured article by Steve Elling in the January 21, 2005 Golf World alleged: