| John Glaiser | |
| Position: | Pitcher |
| Bats: | Left |
| Throws: | Right |
| Birth Date: | 28 July 1894 |
| Birth Place: | Yoakum, Texas |
| Death Place: | Houston, Texas |
| Debutleague: | MLB |
| Debutdate: | April 20 |
| Debutteam: | Detroit Tigers |
| Finalleague: | MLB |
| Finaldate: | May 31 |
| Finalteam: | Detroit Tigers |
| Statleague: | MLB |
| Stat1label: | Win–loss record |
| Stat1value: | 0–0 |
| Stat2label: | Earned run average |
| Stat2value: | 4.91 |
| Stat3label: | Strikeouts |
| Stat3value: | 2 |
| Teams: | |
John Burke Glaiser (July 28, 1894 – March 7, 1959) was a Major League Baseball pitcher who played for the Detroit Tigers in .