John Jeremiah "Lefty" Sullivan (May 31, 1894 – July 7, 1958) was a pitcher in Major League Baseball. He played for the Chicago White Sox in 1919.
John Sullivan
| Given name: | John Jeremiah Sullivan |
| Nicknames: | None |
| Primary Pos: | Pitcher |
| Hght/Wght: | 5'11" / 165 lbs |
| Bats/Throws: | L / L |
| Born: | May 31, 1894 in Chicago, IL |
| Died: | Jul 7, 1958 in Chicago, IL (64 years old) |
| Debut: | Jul 19, 1919 |