There have been multiple John Sullivan's in major league history.
- John Sullivan (sullijo02) - player from 1905-1908
- John Sullivan (sullijo03) - player from 1919-1919
- John Sullivan (sullijo04) - player from 1920-1921
- John Sullivan (sullijo06) - player from 1942-1949
- John Sullivan (sullijo07) - player 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.