| Pete Donnelly | |
| Position: | Outfielder |
| Bats: | Unknown |
| Throws: | Unknown |
| Debutleague: | MLB |
| Debutdate: | May 13 |
| Debutyear: | 1871 |
| Debutteam: | Fort Wayne Kekiongas |
| Finalleague: | MLB |
| Finaldate: | July 8 |
| Finalyear: | 1871 |
| Finalteam: | Fort Wayne Kekiongas |
| Statleague: | MLB |
| Stat1label: | Batting average |
| Stat1value: | .206 |
| Stat2label: | Home runs |
| Stat2value: | 0 |
| Stat3label: | Runs batted in |
| Stat3value: | 3 |
| Teams: | |
Peter J. Donnelly was an outfielder in professional baseball. He played for the Fort Wayne Kekiongas in the National Association in 1871.