Major Leaguers starting with 'OH' | Top | Active Players | Recently Active | Drafted Players | 1st Round Draft Picks | 7+ year Major Leaguer |
| Player Name | Pos | Proper Name | Ht | Wt | B-T | BornDate | Place | HiLvl | Stat Years | MLB Years | Draft Information | Status | Current Org (Level) |
| Hal O'Hagan | 1B | Patrick Henry O'Hagan | 6-0 | 173 | -R | 1869-09-30 | Washington,District of Columbia | MLB | 1892-1902 | 1892-1902 | |||
| Greg O'Halloran | C | Gregory Joseph O'Halloran | 6-2 | 205 | L-R | 1968-05-21 | Toronto,Ontario | MLB | 1989-1995 | 1994-1994 | 1988-32- 836-TOR | ||
| Bill O'Hara | OF | William Alexander O'Hara | 5-10 | 165 | L-R | 1883-08-14 | Toronto,Ontario | MLB | 1909-1910 | 1909-1910 | |||
| Kid O'Hara | OF | James Francis O'Hara | 5-7 | 152 | B-R | 1875-12-19 | Wilkes-Barre,Pennsylvania | MLB | 1904-1904 | 1904-1904 | |||
| Tom O'Hara | OF | Thomas F. O'Hara | - | 1885-07-13 | Waverly,New York | MLB | 1906-1907 | 1906-1907 | |||||
| Ryan O'Hearn | 1B | Ryan Patrick O'Hearn | 6-2 | 215 | L-L | 1993-07-26 | Frisco,Texas | MLB | 2012-2018 | 2018-2018 | 2014- 8- 243-KCA | Active | Kansas City Royals (MLB) |
| Seung-Hwan Oh | P | Seung-Hwan Oh | 5-10 | 202 | R-R | 1982-07-15 | Seoul,Korea | MLB | 2014-2018 | 2016-2018 | 2016- UDFA-SLN | Active | Colorado Rockies (MLB) |
| Tomo Ohka | P | Tomokazu Ohka | 6-1 | 179 | R-R | 1976-03-18 | Kyoto,Japan | MLB | 1994-2014 | 1999-2009 | 1998- UDFA-BOS | Free Agent | |
| Joe Ohl | P | Joseph Earl Ohl | 6-1 | 175 | L-L | 1888-01-10 | Jobstown,New Jersey | MLB | 1909-1909 | 1909-1909 | |||
| Ross Ohlendorf | P | Curtis Ross Ohlendorf | 6-4 | 235 | R-R | 1982-08-08 | Austin,Texas | MLB | 2004-2017 | 2007-2016 | 2004- 4- 116-ARI | International | |
| Mike Ohlman | C | Michael L. Ohlman | 6-4 | 205 | R-R | 1990-12-14 | Bradenton,Florida | MLB | 2009-2018 | 2017-2017 | 2009-11- 326-BAL | Free Agent | |
| Will Ohman | P | William McDaniel Ohman | 6-2 | 195 | L-L | 1977-08-13 | Frankfurt,Germany | MLB | 1998-2012 | 2000-2012 | 1998- 8- 226-CHN | Free Agent | |
| Kevin Ohme | P | Kevin Arthur Ohme | 6-1 | 185 | L-L | 1971-04-13 | West Palm Beach,Florida | MLB | 1993-2003 | 2003-2003 | 1993- 9- 261-MIN | ||
| Shohei Ohtani | P | Shohei Ohtani | 6-3 | 198 | L-R | 1994-07-05 | Iwate,Japan | MLB | 2013-2018 | 2018-2018 | 2017- UDFA-ANA | Active | Los Angeles Angels (MLB) |
| 14 player(s) listed | |||||||||||||
