| John Graff | |
| Position: | Pitcher |
| Bats: | Unknown |
| Throws: | Unknown |
| Birth Date: | November 1866 |
| Birth Place: | Washington, D.C. |
| Death Date: | (aged 65) |
| Death Place: | Washington, D.C. |
| Debutleague: | MLB |
| Debutdate: | July 19 |
| Debutyear: | 1893 |
| Debutteam: | Washington Senators |
| Finalleague: | MLB |
| Finaldate: | July 21 |
| Finalyear: | 1893 |
| Finalteam: | Washington Senators |
| Statleague: | MLB |
| Stat1label: | Win–loss record |
| Stat1value: | 0–1 |
| Stat2label: | Earned run average |
| Stat2value: | 11.25 |
| Stat3label: | Strikeouts |
| Stat3value: | 4 |
| Teams: | |
John J. Graff (November 1866 – April 2, 1932) was a pitcher in Major League Baseball. He played for the Washington Senators in 1893.[1]