There are 14 mathematicians whose last name begin with ONA.
| Onah, Stephen | University of Ibadan | 1998 |
| Onah, Sunday | University of Nigeria | 2021 |
| Onak, Krzysztof | Massachusetts Institute of Technology | 2010 |
| Onak, Önder Nazım | Middle East Technical University | 2018 |
| Onal, Erhan | Texas Tech University | 2002 |
| Onal, Mehmet | University of Florida | 2009 |
| Onal, Suleyman | Middle East Technical University | 1988 |
| Onal Ertugrul, Itir | Middle East Technical University | 2017 |
| Onar, Arzu | University of South Carolina | 1998 |
| Onat, Mehmet | Çukurova Universitesi | 2018 |
| Onat, Turan | İstanbul Teknik Üniversitesi | 1951 |
| Onate, Julia | Texas A&M University | 1988 |
| Onatski, Alexei | Harvard University | 2001 |
| Onay, Gönenç | Université Paris Diderot - Paris 7 | 2011 |