There are 14 mathematicians whose last name begin with GAC.
| Gacek, Andrew | University of Minnesota - Twin Cities | 2009 |
| Gach, Florian | Universität Wien | 2010 |
| Gachechiladze, Natia | Ivane Javakhishvili Tbilisi State University | 2018 |
| Gachet, Cécile | 2023 | |
| Gachet, Fabien | Università degli Studi di Roma Tor Vergata | 2017 |
| Gachet, Frédéric | Université Louis Pasteur - Strasbourg I | 1998 |
| Gachkov, Igor | ||
| Gachpazan, Morteza | ||
| Gačić, Aca | Carnegie Mellon University | 2004 |
| Gacitua-Decar, Veronica | Dublin City University | 2010 |
| Gackstatter, Fritz | Bayerische Julius-Maximilians-Universität Würzburg | 1969 |
| Gács, András | Eötvös Loránd University | 1997 |
| Gács, Peter | Johann Wolfgang Goethe-Universität Frankfurt am Main | 1978 |
| Gaczkowski, Michał | Politechnika Warszawska | 2017 |