There are 24 mathematicians whose last name begin with HAYD.
| Haydar, Hanna | Columbia University | 2002 |
| Haydarlou, A. Reza | Technische Universiteit Delft | 2011 |
| Hayden, Christopher | University of Maryland College Park | 2012 |
| Hayden, Douglas | Boston University | 2012 |
| Hayden, F. Gregory | University of Texas at Austin | 1968 |
| Hayden, John | Michigan State University | 1970 |
| Hayden, John | University of Warwick | 1980 |
| Hayden, Kyle | Boston College | 2018 |
| Hayden, Linda | The American University | 1988 |
| Hayden, Mark | Cornell University | 1998 |
| Hayden, Michael | University of Rhode Island | 1996 |
| Hayden, Patrick | University of Oxford | 2001 |
| Hayden, Richard | Imperial College London | 2011 |
| Hayden, Seymour | Harvard University | 1963 |
| Hayden, Thomas | University of Texas at Austin | 1961 |
| Haydn, Nicolai | University of Warwick | 1986 |
| Haydock, David | University of Hertfordshire | 2024 |
| Haydock, Roger | University of Cambridge | 1972 |
| Haydock, Thomas | Washington State University | 2011 |
| Haydon, Daniel | University of Texas at Austin | 1992 |
| Haydon, James | University of Oxford | 2014 |
| Haydon, Richard | University of Cambridge | 1974 |
| Hayduk, Iryna | University of Houston | 2014 |
| Haydys, Andriy | Georg-August-Universität Göttingen | 2006 |