| John Leary | |
| Position: | First baseman/Catcher |
| Bats: | Right |
| Throws: | Right |
| Birth Date: | 2 May 1891 |
| Birth Place: | Waltham, Massachusetts |
| Death Place: | Waltham, Massachusetts |
| Debutleague: | MLB |
| Debutdate: | April 14 |
| Debutyear: | 1914 |
| Debutteam: | St. Louis Browns |
| Finalleague: | MLB |
| Finaldate: | September 27 |
| Finalyear: | 1915 |
| Finalteam: | St. Louis Browns |
| Statleague: | MLB |
| Stat1label: | Batting average |
| Stat1value: | .258 |
| Stat2label: | Home runs |
| Stat2value: | 0 |
| Stat3label: | Runs batted in |
| Stat3value: | 60 |
| Teams: |
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John Louis Leary (May 2, 1891 – August 18, 1961) was a Major League Baseball first baseman and catcher who played with the St. Louis Browns in and .
After his professional baseball career, he returned to coach at his alma mater Waltham High School. From 1920 to 1947 he coached football, and from 1948 until his retirement in 1959 he was athletic director. The school's Leary Field is named after him.[1]