There are 4 mathematicians whose last name begin with ONY.
| Onyejegbu, Laeticia | University of Port Harcourt, Nigeria | 2012 |
| Onyido, Maria Amarakristi | Auburn University | 2022 |
| Onyshkevych, Boyan | Carnegie Mellon University | 1997 |
| Onyszkiewicz, Janusz | Uniwersytet Warszawski | 1967 |