| John Corcoran | |
| Position: | Shortstop/Third baseman |
| Bats: | Unknown |
| Throws: | Left |
| Birth Place: | Cincinnati, Ohio, United States |
| Death Place: | Cincinnati, Ohio |
| Debutleague: | MLB |
| Debutdate: | September 17 |
| Debutyear: | 1895 |
| Debutteam: | Pittsburgh Pirates |
| Finalleague: | MLB |
| Finaldate: | September 21 |
| Finalyear: | 1895 |
| Finalteam: | Pittsburgh Pirates |
| Statleague: | MLB |
| Stat1label: | Batting average |
| Stat1value: | .150 |
| Stat2label: | Hits |
| Stat2value: | 3 |
| Stat3label: | Stolen bases |
| Stat3value: | 0 |
| Teams: | |
John James Corcoran (1873–1901) was a Major League Baseball player. Niles played for Pittsburgh Pirates in the 1895 season. He played just six games in his career.