| John Shetzline | |
| Position: | Third baseman |
| Bats: | Unknown |
| Throws: | Unknown |
| Birth Date: | 1852 |
| Birth Place: | Philadelphia, Pennsylvania |
| Death Place: | Philadelphia, Pennsylvania |
| Debutleague: | MLB |
| Debutdate: | May 2 |
| Debutyear: | 1882 |
| Debutteam: | Baltimore Orioles |
| Finalleague: | MLB |
| Finaldate: | September 30 |
| Finalyear: | 1882 |
| Finalteam: | Baltimore Orioles |
| Statleague: | MLB |
| Stat1label: | Games played |
| Stat1value: | 73 |
| Stat2label: | Batting average |
| Stat2value: | .220 |
| Stat3label: | Runs batted in |
| Stat3value: | 0 |
| Teams: | |
John Henry Shetzline (1852–1892) was a professional baseball player who primarily played third base in the American Association for the 1882 Baltimore Orioles.