There are 14 mathematicians whose last name begin with GEF.
| Gefeller, Olaf | Universität Dortmund | 1989 |
| Geffen, Eli | ||
| Geffen, Shirly | Universität Münster | 2022 |
| Geffen, Shirly | Ben-Gurion University of the Negev | 2022 |
| Geffen (Feigenblat), Yuval | Tel Aviv University | 1983 |
| Geffert, Michael | Rheinische Friedrich-Wilhelms-Universität Bonn | 1986 |
| Geffet, Maayan | Hebrew University of Jerusalem | 2006 |
| Geffken, Sören | Universität Bremen | 2017 |
| Geffner, Hector | University of California, Los Angeles | 1989 |
| Geffner, Ivan | Cornell University | 2021 |
| Geffroy, Arthur | Université de Rouen | 1997 |
| Geffroy, Jean | Université de Paris | 1958 |
| Gefroh, Daniel | University of Hawaii | 1992 |
| Gefter, Sergey | Vasyl Karazin Kharkiv National University | 1987 |