| John Frill | |
| Position: | Pitcher |
| Bats: | Right |
| Throws: | Left |
| Birth Date: | 3 April 1879 |
| Birth Place: | Reading, Pennsylvania |
| Death Place: | Westerly, Rhode Island |
| Debutleague: | MLB |
| Debutdate: | April 16 |
| Debutteam: | New York Highlanders |
| Finalleague: | MLB |
| Finaldate: | August 21 |
| Finalteam: | Cincinnati Reds |
| Statleague: | MLB |
| Stat1label: | Win–loss record |
| Stat1value: | 3–3 |
| Stat2label: | Earned run average |
| Stat2value: | 5.85 |
| Stat3label: | Strikeouts |
| Stat3value: | 33 |
| Teams: |
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John Edmond Frill (April 3, 1879 – September 28, 1918) was a Major League Baseball pitcher who played in and with the New York Highlanders, St. Louis Browns and the Cincinnati Reds. He batted right and threw left-handed.
He was born in Reading, Pennsylvania, and died in Westerly, Rhode Island.