There are 4 mathematicians whose last name begin with HAGL.
| Hagler, James | University of California, Berkeley | 1972 |
| Haglin, David | University of Minnesota - Twin Cities | 1989 |
| Haglund, Frédéric | Université Claude Bernard Lyon 1 | 1992 |
| Haglund, James | University of Georgia | 1993 |