| John Grimes | |
| Position: | Pitcher |
| Birth Date: | 17 April 1869 |
| Birth Place: | Woodstock, Maryland, U.S. |
| Death Place: | San Francisco, California, U.S. |
| Bats: | Right |
| Throws: | Right |
| Debutleague: | MLB |
| Debutdate: | July 28 |
| Debutyear: | 1897 |
| Debutteam: | St. Louis Browns |
| Finalleague: | MLB |
| Finaldate: | August 2 |
| Finalyear: | 1897 |
| Finalteam: | St. Louis Browns |
| Statleague: | MLB |
| Stat1label: | Win–loss record |
| Stat1value: | 0–2 |
| Stat2label: | Strikeouts |
| Stat2value: | 4 |
| Stat3label: | Earned run average |
| Stat3value: | 5.95 |
| Teams: |
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John Thomas Grimes (April 17, 1869 - January 17, 1964) was an American professional baseball player who played in three games for the St. Louis Browns during the season. He was born in Baltimore, Maryland and died in San Francisco at the age of 94. At the time of his death, he was the oldest living former major league player. On the 31st of July, Grimes hit six St Louis Browns hitters, setting a National League record that still stands today.[1] John Grimes never pitched professionally again.