| Jim Mertz | |
| Position: | Pitcher |
| Bats: | Right |
| Throws: | Right |
| Birth Date: | 10 August 1916 |
| Birth Place: | Lima, Ohio, US |
| Death Place: | Waycross, Georgia, US |
| Debutleague: | MLB |
| Debutdate: | May 1 |
| Debutyear: | 1943 |
| Debutteam: | Washington Senators |
| Finalleague: | MLB |
| Finaldate: | October 2 |
| Finalyear: | 1943 |
| Finalteam: | Washington Senators |
| Statleague: | MLB |
| Stat1label: | Win–loss record |
| Stat1value: | 5–7 |
| Stat2label: | Earned run average |
| Stat2value: | 4.63 |
| Stat3label: | Strikeouts |
| Stat3value: | 53 |
| Teams: | |
James Verlin Mertz (August 10, 1916 – February 4, 2003) was a pitcher in Major League Baseball. He played for the Washington Senators, appearing in 33 games, all during the 1943 season, making ten starts, while notching three saves.[1]