Jack William O'Connor (born June 2, 1958) is an American former Major League Baseball pitcher. He played all or part of six seasons in the majors, between 1981 and 1987.
Jack O'Connor
| Given name: | Jack William O'Connor |
| Nicknames: | None |
| Primary Pos: | Pitcher |
| Hght/Wght: | 6'3" / 215 lbs |
| Bats/Throws: | L / L |
| Born: | Jun 2, 1958 in Twentynine Palms, CA |
| Age: | 67 |
| Debut: | Apr 9, 1981 |