There are 4 mathematicians whose last name begin with ONT.
| Ontaneda Portal, Pedro | State University of New York at Stony Brook | 1994 |
| Ontani, Riccardo | Scuola Internazionale Superiore di Studi Avanzati (SISSA) | 2024 |
| Ontanon, Santi | Universidad Autónoma de Barcelona | 2005 |
| Ontela, Surender | National Institute of Technology, Warangal | 2014 |