There are 5 mathematicians whose last name begin with ACT.
| Actis, Marcelo | Universidad Nacional del Litoral | 2014 |
| Acton, Donald | University of British Columbia | 1994 |
| Acton, Forman | Carnegie Mellon University | 1949 |
| Acton, Riley | Michigan State University | 2020 |
| Actor, Jonas | Rice University | 2021 |