| John Kirby | |
| Position: | Pitcher |
| Throws: | Right |
| Birth Date: | January 13, 1865 |
| Birth Place: | St. Louis, Missouri |
| Death Place: | St. Louis, Missouri |
| Debutleague: | MLB |
| Debutdate: | August 1 |
| Debutyear: | 1884 |
| Debutteam: | Kansas City Cowboys (UA) |
| Finalleague: | MLB |
| Finaldate: | June 29 |
| Finalyear: | 1888 |
| Finalteam: | Kansas City Cowboys (AA) |
| Statleague: | MLB |
| Stat1label: | Win–loss record |
| Stat1value: | 18-50 |
| Stat2label: | Earned run average |
| Stat2value: | 4.09 |
| Stat3label: | Strikeouts |
| Stat3value: | 200 |
| Teams: |
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John F. Kirby (January 13, 1865 - October 6, 1931) was a Major League Baseball pitcher. He played all or part of five seasons in the majors, from -, for the Kansas City Cowboys of the Union Association and St. Louis Maroons, Indianapolis Hoosiers, Cleveland Blues and Kansas City Cowboys of the American Association.