There are 25 mathematicians whose last name begin with OGA.
| Ogaja, James | University of California, Riverside | 2018 |
| Ogaki, Masao | The University of Chicago | 1988 |
| Ogaki, Sho | Osaka University | 2015 |
| Ogan, Gül | ETH Zürich | 2000 |
| Ogana, Wandera | Stanford University | 1975 |
| Oganes, Luis | New York University | 1999 |
| Oganesyan, Grigor | Lomonosov Moscow State University | 1979 |
| Oganesyan, Vardan | Lomonosov Moscow State University | 2017 |
| Oganian, Anna | Universitat Politècnica de Catalunya | 2003 |
| Oganisian, Arman | University of Pennsylvania | 2021 |
| Oganyan, R. | Steklov Institute of Mathematics | 1962 |
| Ogar, Vasily | Moscow Institute of Physics and Technology | 1978 |
| Ogasawara, Takeshi | Kyushu University | 2012 |
| Ogata, Kohichi | ||
| Ogata, Yoshiko | University of Tokyo | 2004 |
| Ogata, Yuta | Kobe University | 2017 |
| Ogata, Yuta | Kobe University | 2017 |
| Ogawa, Hajimu | University of California, Berkeley | 1961 |
| Ogawa, Junjiro | ||
| Ogawa, Mizuhito | University of Tokyo | 2002 |
| Ogawa, Roy | University of California, Berkeley | 1971 |
| Ogawa, Scott | Northwestern University | 2013 |
| Ogawa, Shigeyoshi | ||
| Ogawa, Takayoshi | ||
| Ogawa, Toshiyuki |