| Jack Wisner | |
| Position: | Pitcher |
| Bats: | Right |
| Throws: | Right |
| Birth Date: | 5 November 1899 |
| Birth Place: | Grand Rapids, Michigan |
| Death Place: | Jackson, Michigan |
| Debutleague: | MLB |
| Debutdate: | September 12 |
| Debutyear: | 1919 |
| Debutteam: | Pittsburgh Pirates |
| Finalleague: | MLB |
| Finaldate: | May 15 |
| Finalyear: | 1926 |
| Finalteam: | New York Giants |
| Statleague: | MLB |
| Stat1label: | Win–loss record |
| Stat1value: | 4–5 |
| Stat2label: | Earned run average |
| Stat2value: | 3.21 |
| Stat3label: | Strikeouts |
| Stat3value: | 35 |
| Teams: |
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John Henry Wisner (November 5, 1899 – December 15, 1981), known as "Big" Jack Wisner,[1] 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.[2]