| Tom Sullivan | |
| Position: | Pitcher |
| Birth Date: | 1 March 1860 |
| Birth Place: | New York, New York |
| Bats: | Unknown |
| Throws: | Unknown |
| Debutleague: | MLB |
| Debutdate: | September 27 |
| Debutyear: | 1884 |
| Debutteam: | Columbus Buckeyes |
| Finalleague: | MLB |
| Finaldate: | June 23 |
| Finalyear: | 1889 |
| Finalteam: | Kansas City Cowboys |
| Statleague: | MLB |
| Stat1label: | Win–loss record |
| Stat1value: | 14–33 |
| Stat2label: | Earned run average |
| Stat2value: | 4.04 |
| Stat3label: | Strikeouts |
| Stat3value: | 147 |
| Teams: | |
Thomas Sullivan (March 1, 1860 – April 12, 1947) was a Major League Baseball pitcher who played for the Columbus Buckeyes, Louisville Colonels and Kansas City Cowboys in the American Association from 1884 to 1889.