There are 15 mathematicians whose last name begin with HAJJ.
| Hajj, Ibrahim | University of California, Berkeley | 1970 |
| Hajj, Muhammad | ||
| Hajja, Ayman | University of North Carolina at Charlotte | 2013 |
| Hajja, Mowaffaq | Purdue University | 1978 |
| Hajj-Ahmad, Adi | University of Maryland College Park | 2016 |
| Hajjam el Hassani, Mohamed | Université Louis Pasteur - Strasbourg I | 1991 |
| Hajjar, Jerome | ||
| Hajjari, Tayebeh | Islamic Azad University | 2009 |
| Hajj Chehade, Hana | Lebanese University | 2013 |
| Hajj Chehade, Hana | Université de Picardie Jules Verne | 2013 |
| Hajjej, Mohamed Lasmer | Université Blaise Pascal | 2012 |
| Hajjej, Zayd | University of Monastir | 2016 |
| Hajji, Mohamed | Carleton University | 2003 |
| Hajji, Rawaa | Université Tunis-El Manar | 2021 |
| Hajji, Wadii | University of Ottawa | 2011 |