John Henry Wisner (November 5, 1899 – December 15, 1981), known as "Big" Jack Wisner, was a professional baseball pitcher. He played all or part of four seasons in Major League Baseball between 1919 and 1926. He played for the Pittsburgh Pirates and New York Giants.
Jack Wisner
| Given name: | John Henry Wisner |
| Nicknames: | None |
| Primary Pos: | Pitcher |
| Hght/Wght: | 6'3" / 195 lbs |
| Bats/Throws: | R / R |
| Born: | Nov 5, 1899 in Grand Rapids, MI |
| Died: | Dec 15, 1981 in Jackson, MI (82 years old) |
| Debut: | Sep 12, 1919 |