John Graydon "Jack" Hardy (born October 8, 1959) is an American former professional baseball player. He was a right-handed pitcher for one season (1989) with the Chicago White Sox of the Major League Baseball (MLB). For his career, he recorded no decisions, with a 6.57 earned run average, and four strikeouts in 12⅓ innings pitched.
Jack Hardy
| Given name: | John Graydon Hardy |
| Nicknames: | None |
| Primary Pos: | Pitcher |
| Hght/Wght: | 6'2" / 175 lbs |
| Bats/Throws: | R / R |
| Born: | Oct 8, 1959 in St. Petersburg, FL |
| Age: | 65 |
| Debut: | May 23, 1989 |