There are 20 mathematicians whose last name begin with OTA.
| Ota, Cleaver | Florida State University | 1991 |
| Ota, Clem | New Mexico State University | 1976 |
| Ota, Katsuhiro | University of Tokyo | 1989 |
| Ota, Peggy | University of Pennsylvania | 1972 |
| Ota, Yasushi | Osaka University | 2006 |
| Otachel, Zdzisław | Uniwersytet Marii Curie-Skłodowskiej | 1997 |
| Otadi, Mahmood | Islamic Azad University | 2006 |
| Otáhalová, Renata | Silesian University in Opava | 2009 |
| Otal, Javier | Universidad de Zaragoza | 1975 |
| Otal, Jean-Pierre | Université Paris-Sud XI - Orsay | 1989 |
| Otanez, Paul | Cornell University | 2007 |
| Otani, Atsuya | Friedrich-Alexander-Universität Erlangen-Nürnberg | 2016 |
| Otani, Niels | University of California, Berkeley | 1986 |
| Otani, Thomas | University of California, San Diego | 1983 |
| Otani, Yoshihiko | University of Minnesota - Twin Cities | 1969 |
| Otani, Yul | University of Tokyo | 2017 |
| Ôtani, Mitsuharu | University of Tokyo | 1978 |
| Otarola, Enrique | University of Maryland College Park | 2014 |
| Otava, Martin | Hasselt University | 2015 |
| Otay, Abdulwahab | University of Miami | 1996 |