There have been multiple persons named John Sullivan in major league history.
- John Sullivan (sullijo02) - John Eugene Sullivan, catcher from 1905-1908
- John Sullivan (sullijo03) - John Jeremiah Sullivan, pitcher in 1919
- John Sullivan (sullijo04) - John Lawrence Sullivan, outfielder from 1920-1921
- John Sullivan (sullijo06) - John Paul Sullivan, infielder from 1942-1949
- John Sullivan (sullijo07) - John Peter Sullivan, catcher from 1963-1968
Disambiguation Pages are for subjects or titles that might refer to multiple possible BR Bullpen subjects. If your link directed you to this page, you may want to update it to one of the pages above.