| John Grady | |
| Position: | First baseman |
| Bats: | Unknown |
| Throws: | Unknown |
| Birth Date: | 15 December 1858 |
| Birth Place: | Philadelphia, Pennsylvania |
| Death Place: | Philadelphia, Pennsylvania |
| Debutleague: | MLB |
| Debutdate: | May 10 |
| Debutyear: | 1884 |
| Debutteam: | Altoona Mountain City |
| Finalleague: | MLB |
| Finaldate: | May 24 |
| Finalyear: | 1884 |
| Finalteam: | Altoona Mountain City |
| Statleague: | MLB |
| Stat1label: | Batting average |
| Stat1value: | .306 |
| Stat2label: | Home runs |
| Stat2value: | 0 |
| Stat3label: | Runs scored |
| Stat3value: | 5 |
| Teams: | |
John F. Grady (December 15, 1858 – April 26, 1924) was a professional baseball player who played one year of professional baseball for the 1884 Altoona Mountain Citys. Mainly an outfielder, Grady played in 9 games, getting 36 at bats. His batting average was .306.