There are 27 mathematicians whose last name begin with GEM.
| Geman, Donald | Northwestern University | 1970 |
| Geman, Hélyette | Université Pantheon-Sorbonne : Paris I | 1990 |
| Geman, Stuart | Massachusetts Institute of Technology | 1977 |
| Gemayel, Nader | The Ohio State University | 2010 |
| Gemeda, Demissu | Brandeis University | 1976 |
| Gemeinder, Marcus | Fernuniversität Hagen | 2003 |
| Gemeinhardt, Wieland | Ruhr-Universität Bochum | 1971 |
| Gemelos, George | Stanford University | 2006 |
| Gemes, Kenneth | University of Pittsburgh | 1991 |
| Gemici-Ozkan, Banu | Lehigh University | 2008 |
| Gemignani, Luca | Università di Pisa | 1988 |
| Gemignani, Michael | University of Notre Dame | 1965 |
| Gemis, Marc | Universiteit Antwerpen | 1996 |
| Gemistos, Georgios | 1380, 1393 | |
| Gemma, James | The Ohio State University | 1970 |
| Gemmell, David | Simon Fraser University | 1995 |
| Gemmell, Peter | University of California, Berkeley | 1993 |
| Gemmetto, Valerio | Universiteit Leiden | 2018 |
| Gemmill, Jill | University of Alabama-Birmingham | 2006 |
| Gemmrich, Simon | McGill University | 2009 |
| Gemoets, Darren | University of Wyoming | 2013 |
| Gemp, Ian | University of Massachusetts Amherst | 2019 |
| Gemsa, Andreas | Karlsruher Institut für Technologie (KIT) | 2014 |
| Gemulla, Rainer | Technische Universität Dresden | 2008 |
| Gemünde, Mike | Technische Universität Kaiserslautern | 2013 |
| Gemünden, Thomas | ETH Zürich | 2020 |
| Gemus, Jonathan | Northwestern University | 2009 |