There are 11 mathematicians whose last name begin with RYO.
| Ryoji, Kondo | Kyoto University | 1970 |
| Ryom-Hansen, Steen | Aarhus University | 1994 |
| Ryoo, Hong | University of Illinois at Urbana-Champaign | 1999 |
| Ryoo, Jungwoo | University of Kansas | 2005 |
| Ryoo, Keecheol | University of Wisconsin-Madison | 1991 |
| Ryoo, Seung-Yeon | Princeton University | 2023 |
| Ryoo, Shane | University of Illinois at Urbana-Champaign | 2008 |
| Ryoshi, Hotta | ||
| Ryou, Donggeun | University of Rochester | 2024 |
| Ryou, Jai-Won | Yale University | 1989 |
| Ryou, Kazuhiro | Tokyo Institute of Technology | 2016 |