There are 71 mathematicians whose last name begin with GY.
| Gyakum, John | Massachusetts Institute of Technology | 1981 |
| Gyamerah, Samuel | Pan African University Institute for Basic Sciences, Technology and Innovation | 2019 |
| Gyamfi, Kwasi | Kwame Nkrumah University of Science and Technology, Kumasi | 2012 |
| Gyan, Nana Baah | Vrije Universiteit Amsterdam | 2016 |
| Gyárfás, András | Hungarian Academy of Sciences | 1980 |
| Gyárfás, Gábor | Rheinische Friedrich-Wilhelms-Universität Bonn | 1990 |
| Gyarmathi, Attila | University of Debrecen | 1989 |
| Gyarmathi, László | Technical University of Budapest | 1950 |
| Gyarmathy, Georg | ETH Zürich | 1962 |
| Gyarmati, Katalin | Université Henri Poincaré Nancy 1 | 2005 |
| Gyarmati, Katalin | Eötvös Loránd University | 2005 |
| Gyarmati, Peter | Eötvös Loránd University | 1981 |
| Gyasi-Agyei, Amoakoh | University of Adelaide | 2003 |
| Gyaw, Tun | University of Illinois at Urbana-Champaign | 1998 |
| Gybels, Jan | McGill University | 1962 |
| Gybels, Jan | Katholieke Universiteit Leuven | 1962 |
| Gybels, Jan | Katholieke Universiteit Leuven | 1955 |
| Gyelabi, Johnson | Columbia University | 1970 |
| Gyenge, Ádám | Eötvös Loránd University | 2016 |
| Gyenis, Balazs | University of Pittsburgh | 2013 |
| Gyenis, Zalán | Central European University | 2013 |
| Gyenizse, Gergő | University of Szeged | 2018 |
| Gyetvai, Attila | Duke University | 2021 |
| Gyftopoulos, Elias | Massachusetts Institute of Technology | 1958 |
| Gygax, Lorenz | Universität Zürich | 2000 |
| Gygax, Raymond | ETH Zürich | 1974 |
| Gyi, Maung | Stanford University | 1965 |
| Gyi, Myo | Technische Universität Berlin | 1998 |
| Gyimesi, Eszter | University of Debrecen | 2019 |
| Gyires, Béla | József Nádor Mûszaki és Gazdaságtudományi Egyetem | 1941 |
| Gylden, Hugo | Helsingin yliopisto | 1861 |
| Gyllenberg, Mats | Teknillinen korkeakoulu | 1987 |
| Gyllstrom, Hans | The University of Iowa | 1969 |
| Gyllstrom, Karl | The University of North Carolina at Chapel Hill | 2009 |
| Gylterud, Håkon | Stockholm University | 2017 |
| Gylys, Adolfas | Vilniaus universitetas | 1971 |
| Gylys, Remigijus Petras | Vilniaus universitetas | 1979 |
| Gylys, Vytas | University of Illinois at Urbana-Champaign | 1963 |
| Gylys-Colwell, Frederick | University of Washington | 1993 |
| Gyoergy, Andras | Massachusetts Institute of Technology | 2016 |
| Gyöngy, István | Lomonosov Moscow State University | 1981 |
| Gyorffy, Balazs | Yale University | 1966 |
| Győrffy, Dóra | ||
| Győrffy, Lajos | University of Szeged | 2019 |
| Györfi, László | ||
| György, András | ||
| Györgyi, Peter | Eötvös Loránd University | 2018 |
| Gyori, Ervin | Eötvös Loránd University | 1980 |
| Gyori, Ervin | Hungarian Academy of Sciences | 1994 |
| Gyori, Ervin | Hungarian Academy of Sciences | 1984 |
| Győri, István | Hungarian Academy of Sciences | 1974 |
| Győry, Kálmán | University of Debrecen | 1966 |
| Győry, Máté | University of Debrecen | 2003 |
| Gyrya, Pavel | Cornell University | 2007 |
| Gyrya, Vitaliy | The Pennsylvania State University | 2010 |
| Gysel, Julius | Universität Zürich | 1874 |
| Gysi, Michael | ETH Zürich | 2000 |
| Gysi, Tobias | ETH Zürich | 2019 |
| Gysin, Ernest | Université de Genève | 1925 |
| Gysin, Hanspeter | ETH Zürich | 1992 |
| Gysin, Liliana | Universidad de Buenos Aires | 1987 |
| Gysin, Marc | University of Wollongong | 1998 |
| Gysin, Marcel | Université de Genève | 1920 |
| Gysin, Werner | ETH Zürich | 1941 |
| Gyssens, Marc | Universiteit Antwerpen | 1985 |
| Gyulassy, Attila | University of California, Davis | 2008 |
| Gyulov, Tihomir | Central European University | 2010 |
| Gyuris, Viktor | University of Illinois at Chicago | 1999 |
| Gyurko, Lajos | University of Oxford | 2009 |
| Gyurkovics, Éva | ||
| Gyurov, Boyko | University of Arkansas | 2008 |