James Joseph Byrnes (January 5, 1880 – July 31, 1941) was an American Major League Baseball catcher. He played for the Philadelphia Athletics during the 1906 season.
Jim Byrnes
| Given name: | James Joseph Byrnes |
| Nicknames: | None |
| Primary Pos: | Catcher |
| Hght/Wght: | 5'9" / 150 lbs |
| Bats/Throws: | R / R |
| Born: | Jan 5, 1880 in San Francisco, CA |
| Died: | Jul 31, 1941 in San Francisco, CA (61 years old) |
| Debut: | Apr 19, 1906 |