There are 40 mathematicians whose last name begin with OKU.
| Okubo, Kenjiro | University of Tokyo | 1965 |
| Okubo, Susumu | University of Rochester | 1958 |
| Okubo, Tanjiro | ||
| Okuboyejo, Olaperi | University of the Witwatersrand | 2022 |
| Okuda, Hidenobu | University of Minnesota - Twin Cities | 1989 |
| Okuda, Hideo | University of California, Berkeley | 1970 |
| Okuda, Takayuki | University of Tokyo | 2013 |
| Okudono, Takamasa | The Graduate University for Advanced Studies, SOKENDAI | 2021 |
| Okugawa, Kôtaro | Kyoto University | 1949 |
| Okuhara, Saki | Tokyo Metropolitan University | 2013 |
| Okui, Ryo | University of Pennsylvania | 2005 |
| Okui, Takao | University of Florida | 1999 |
| Okui, Takemichi | University of California, Berkeley | 2003 |
| Okuma, Kaori | Ritsumeikan University | 2024 |
| Okumura, Masafumi | Tokyo Institute of Technology | 1967 |
| Okumura, Shuhei | Carnegie Mellon University | 2011 |
| Okumura, Toshiki | Ritsumeikan University | 2019 |
| Okumura, Yoshiaki | Tokyo Institute of Technology | 2019 |
| Okumus, Ibrahim | Syracuse University | 2003 |
| Okumus, Samet | North Carolina State University | 2016 |
| Okun, Arthur | Columbia University | 1956 |
| Okun, Boris | State University of New York at Binghamton | 1994 |
| Okun, Mikhail | Universität Wien | 2014 |
| Okunbor, Daniel | University of Illinois at Urbana-Champaign | 1993 |
| Okundaye, Benjamin | University of the Witwatersrand | 2015 |
| Okunev, Alexey | Institute for Information Transmission Problems, Russian Academy of Sciences | 2017 |
| Okunev, Alexey | National Research University – Higher School of Economics | 2017 |
| Okunev, I. | Voronezh State University | 1987 |
| Okunev, Leopold | Lomonosov Moscow State University | 1933 |
| Okunev, Oleg | Lomonosov Moscow State University | 1984 |
| Okunev, Pavel | University of California, Berkeley | 2005 |
| Okur, Özge | Technische Universiteit Delft | 2021 |
| Okur, Ulker | Yakın Doğu Üniversitesi | 2024 |
| Okur, Yeliz | Universitetet i Oslo | 2009 |
| Okura, Hiroyuki | Osaka University | 1985 |
| Okushi, Fumiaki | University of California, Santa Cruz | 1998 |
| Okutan, Osman | The Ohio State University | 2019 |
| Okutmustur, Baver | Université Pierre-et-Marie-Curie - Paris VI | 2010 |
| Okutoyi, Ingutia | University of Birmingham | 1984 |
| Oku-Ukpong, Edima | University of Windsor | 1994 |