| Current position | |
|---|---|
| Title | Head coach |
| Team | Xavier |
| Conference | Big East |
| Record | 182–171 |
| Biographical details | |
| Born | January 2, 1987 Cincinnati, Ohio, U.S. |
| Playing career | |
| 2006–2007 | Indiana |
| 2008–2009 | Xavier |
| 2009 | Arizona League Rangers |
| 2009 | Spokane Indians |
| 2010 | Washington Wild Things |
| Position(s) | Catcher |
| Coaching career (HC unless noted) | |
| 2011–2012 | Xavier (vol. asst.) |
| 2013 | Northern Kentucky (vol. asst.) |
| 2014–2017 | Xavier (asst.) |
| 2018–present | Xavier |
| Head coaching record | |
| Overall | 182–171 |
| Tournaments | Big East: 10–9 NCAA: 2–2 |
| Accomplishments and honors | |
| Championships | |
| Big East Conference Tournament (2023) | |
William O'Conner Jr. (born January 2, 1987) is an American college baseball coach and former catcher. O'Conner is the head coach of the Xavier Musketeers baseball team. O'Conner played college baseball at the Indiana University for coach Tracy Smith before transferring to the Xavier University to play for coach Scott Googins from 2008 to 2009.