There are 6 mathematicians whose last name begin with ALEJ.
| Aleja, David | Universidad Complutense de Madrid | 2015 |
| Aleja, David | Universidad Carlos III de Madrid | 2021 |
| Alejandre, Manuel | Universidad Miguel Hernandez de Elche | 2002 |
| Alejandro, Priscila | University of the Philippines | 1998 |
| Alejo Plana, Miguel Ángel | Universidad del País Vasco | 2010 |
| Alejo-Reyes, Avelina | Universidad Panamericana | 2021 |