| John Donnelly | |
| Position: | Infielder |
| Bats: | Unknown |
| Throws: | Unknown |
| Birth Date: | 1850 11, mf=yes |
| Birth Place: | Philadelphia, Pennsylvania |
| Death Place: | Minneapolis, Minnesota |
| Debutleague: | MLB |
| Debutdate: | April 14 |
| Debutyear: | 1873 |
| Debutteam: | Washington Blue Legs |
| Finalleague: | MLB |
| Finaldate: | October 30 |
| Finalyear: | 1874 |
| Finalteam: | Philadelphia Whites |
| Statleague: | MLB |
| Stat1label: | Batting average |
| Stat1value: | .252 |
| Stat2label: | Home runs |
| Stat2value: | 0 |
| Stat3label: | Runs batted in |
| Stat3value: | 21 |
| Teams: | |
John Louis Donnelly (November 15, 1850 – December 24, 1913) was an American infielder in professional baseball. He played in the National Association for the 1873 Washington Blue Legs and 1874 Philadelphia Whites.