There have been multiple persons named John Ryan in major league history.
- John Ryan (ryanjo02) - John A. Ryan, pitcher in 1884
- John Ryan - player in 1884, now listed under his real name of Dan Sheehan
- Jack Ryan (ryanja01) - John "Jack" Ryan, player from 1889-1913
- Johnny Ryan - player from 1873-1877
- John Ryan Murphy - John Ryan Murphy, catcher from 2013-
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.