There are 11 mathematicians whose last name begin with NIY.
| Niyamosoth, Thanawath | Chinese Academy of Sciences | 2014 |
| Niyazov, Rustam | Tashkent State University | 1979 |
| Niyibigira, Emmanuel | Landbouwuniversiteit Wageningen | 2003 |
| Niyikiza, Clet | Indiana University | 1991 |
| Niyirora, Jerome | State University of New York at Binghamton | 2013 |
| Niyobuhungiro, Japhet | Linköpings Universitet | 2015 |
| Niyogi, Anindita | University of Maryland Baltimore County | 1992 |
| Niyogi, Debashish | State University of New York at Buffalo | 1994 |
| Niyogi, Partha | Massachusetts Institute of Technology | 1995 |
| Niyomsatay, Terasan | University of Ottawa | 2008 |
| Niyonzima, Yvonne | North Carolina State University | 2022 |