There are 27 mathematicians whose last name begin with TSY.
| Tsybakov, Alexandre | Russian Academy of Sciences | 1982 |
| Tsybakov, Boris | 1958 | |
| Tsyban, Alexandra | Universität des Saarlandes | 2009 |
| Tsybulin, Vyacheslav | 1990 | |
| Tsybulnik, Ernie | University of Notre Dame | 2023 |
| Tsydilo, Konstantin | Institute of Mathematics of the National Academy of Sciences of Ukraine | 1973 |
| Tsygan, B. | Institute of Mathematics of the National Academy of Sciences of Ukraine | |
| Tsygan, Boris | Lomonosov Moscow State University | 1987 |
| Tsygan, Marina | Chalmers Tekniska Högskola | 1994 |
| Tsyganov, Eugene | Indiana University | 2003 |
| Tsyganovsky, Mikhaoil | Institute of Mathematics of the National Academy of Sciences of Ukraine | 1980 |
| Tsygvintsev, Alexei | Lomonosov Moscow State University | 2001 |
| Tsykunov, Alexander | Kyrgyz State Technical University | 1986 |
| Tsykunov, Alexander | Institute of Control Sciences | 1986 |
| Tsykunov, Alexander | Baltic State Technical University | 1975 |
| Tsyl'ke, Andrei A. | 1993 | |
| Tsymbal, Alexey | Jyväskylän yliopisto | 2002 |
| Tsymbal, Larisa | Kharkiv National University of Radioelectronics | 1982 |
| Tsymbal, Viktor | Ivan Franko National University of Lviv | 1979 |
| Tsymbaliuk, Aleksander | Massachusetts Institute of Technology | 2014 |
| Tsynguev, Bulat | Transbaikal State University | 2015 |
| Tsynkov, Semyon | Keldysh Institute of Applied Mathematics | 1991 |
| Tsypkin, Yakov | Automatics and Telemechanics Institute | 1948 |
| Tsypkin, Yakov | Automatics and Telemechanics Institute | 1945 |
| Tsyrennikov, Viktor | New York University | 2007 |
| Tsyupii, Tamara | Taras Shevchenko National University of Kyiv | 2002 |
| Tsyvinski, Aleh | University of Minnesota - Twin Cities | 2003 |