There are 11 mathematicians whose last name begin with GREF.
| Gref, Lynn | University of California, Riverside | 1966 |
| Gref, Michael | Rheinische Friedrich-Wilhelms-Universität Bonn | 2022 |
| Grefe, Carsten | Freie Universität Berlin | 1998 |
| Grefen, Paul | Universiteit Twente | 1992 |
| Grefenstette, Edward | University of Oxford | 2013 |
| Grefenstette, John | University of Pittsburgh | 1980 |
| Greferath, Marcus | Johannes Gutenberg-Universität Mainz | 1993 |
| Greff, Isabelle | Université Paul Verlaine - Metz | 2003 |
| Greffet, Jean-Jacques | ||
| Greffier, Françoise | Université Pierre Mendès France (Grenoble-II) | 1985 |
| Grefsrud, Gary | Montana State University | 1971 |