There are 4 mathematicians whose last name begin with FIES.
| Fieschi, Roberto | Universiteit Leiden | 1954 |
| Fieseler, Karl-Heinz | Westfälische Wilhelms-Universität Münster | 1979 |
| Fieser, Louis | Harvard University | 1924 |
| Fiestras-Janeiro, M. Gloria | Universidade de Santiago de Compostela |