There are 46 mathematicians whose last name begin with AJ.
| Aja, Remigius | University of Nigeria | 2017 |
| Ajadi, Suraju | Obafemi Awolowo University | 2005 |
| Ajaev, Vladimir | Northwestern University | 1999 |
| Ajah, Augustine | Technische Universiteit Delft | 2007 |
| Ajala, Olusegun | 2010 | |
| Ajala, Samuel | University of California, Berkeley | 1979 |
| Ajan, K. | Marquette University | 1993 |
| Ajanapon, Pimon | Purdue University | 1985 |
| Ajaps, Sandra | New York University | 2021 |
| Ajayi, Adonis | Delaware State University | 2015 |
| Ajayi, Temitayo | Rice University | 2020 |
| Ajayi (nee Suberu), Deborah | University of Ibadan | 1996 |
| Ajazi, Fioralba | Université de Lausanne | 2018 |
| Ajdler, Thibaut | École Polytechnique Fédérale de Lausanne (EPFL) | 2006 |
| Ajdukiewicz, Kazimierz | University of Lwów | 1912 |
| Ajelli, Marco | Università degli Studi di Trento | 2009 |
| Ajetunmobi, Michael | 1986 | |
| Ajewole, Kayode | Kansas State University | 2019 |
| Ajgl, Jiří | University of West Bohemia, Pilsen | 2013 |
| Aji, Ablimit | Emory University | 2014 |
| Aji, Ashwin | Virginia Polytechnic Institute and State University | 2015 |
| Aji, Salaheddine | University Sidi Mohamed Ben Abdellah, Fès | 2000 |
| Aji, Sani | King Mongkut's University of Technology Thonburi | 2022 |
| Aji, Vivek | University of Illinois at Urbana-Champaign | 2002 |
| Ajibo, Amos | University of Newcastle upon Tyne | 2019 |
| Ajiev, Sergey | Australian National University | 2004 |
| Ajili, Farid | Université Henri Poincaré Nancy 1 | 1998 |
| Ajina, Mohanad | George Mason University | 2020 |
| Ajitabh, Kaushal | Massachusetts Institute of Technology | 1994 |
| Ajjanagadde, Ganesh | Massachusetts Institute of Technology | 2020 |
| Ajjanagadde, Venkat | University of Minnesota - Twin Cities | 1997 |
| Ajjour, Ahmad | Uniwersytet Jagielloński | 1990 |
| Ajmani, Amit | University of Adelaide | 1993 |
| Ajmani, Manisha | Glasgow Caledonian University | 2019 |
| Ajmani, Sameer | Massachusetts Institute of Technology | 2004 |
| Ajmani, Vivek | University of Florida | 1998 |
| Ajmeri, Nirav | North Carolina State University | 2019 |
| Ajmi, Hedi | Michigan State University | 1992 |
| Ajmi, Neyla | 2011 | |
| Ajmone Marsan, Giulia | École des hautes études en sciences sociales Paris | 2009 |
| Ajoodanian, Mehrzad | Columbia University | 2000 |
| Ajoodani-Namini, Shahin | California Institute of Technology | 1998 |
| Ajouz, Ali | Universität Siegen | 2015 |
| Ajtai, Miklos | Eötvös Loránd University | 1976 |
| Ajwa, Iyad | Kent State University | 1998 |
| Ajwani, Deepak | Universität des Saarlandes | 2008 |