There are 56 mathematicians whose last name begin with LEL.
| Leland, Hayne | Harvard University | 1968 |
| Leland, Kenneth | Louisiana State University | 1963 |
| Leland, Mary-Diane | University of Wisconsin-Madison | 1983 |
| Leland, Will | University of Wisconsin-Madison | 1982 |
| Lelarge, Marc | École Polytechnique | 2005 |
| Lelas, Nikola | University of Belgrade | 2023 |
| Lelchuk, Mark | Ural State University | 1967 |
| Lele, Alok | Technische Universiteit Eindhoven | 2018 |
| Lele, Celestin | Harbin Institute of Technology | 2001 |
| Lele, Chitra | Stanford University | 1990 |
| Lele, Sanjiva | Cornell University | 1985 |
| Lele, Shreevardhan | University of Michigan | 1996 |
| Lele, Subhash | The Pennsylvania State University | 1987 |
| Lelek, Andrew | Uniwersytet Wrocławski | 1959 |
| Leler, William | The University of North Carolina at Chapel Hill | 1987 |
| Lelescu, Dan | University of Illinois at Chicago | 2000 |
| Leleu, Claire | 2001 | |
| Leleu, Xavier | Aix-Marseille Université | 2000 |
| Lelewer, Debra | University of California, Irvine | 1991 |
| Lelgemann, Dieter | Technische Universität Berlin | 1971 |
| Lelieveld, Jos | Universiteit Utrecht | 1990 |
| Lelièvre, Frédéric | Université d'Évry | 2010 |
| Lelièvre, Samuel | Université de Rennes 1 | 2004 |
| Lelièvre, Tony | École Nationale des Ponts et Chaussées | 2004 |
| Lelikova, Elena | Ural State University | |
| Lelis, Dimitri | Université Pierre Mendès France (Grenoble-II) | 1989 |
| Lelis, Jean | Universidade de Brasília | 2018 |
| Lelis, Levi | University of Alberta | 2013 |
| Lelis, Maria Luiza | Universidade de São Paulo | 1996 |
| Leliveld, Cornelis | Technische Universiteit Delft | 1996 |
| Leliveld, Johanna | Universiteit van Amsterdam | 1931 |
| Lelkes, Adam | University of Illinois at Chicago | 2017 |
| Lella, Paolo | Università di Torino | 2012 |
| Lellahi, Seyed-Kazem | Université de Paris | 1969 |
| Lellahi, Seyed-Kazem | Université Sorbonne Paris Nord | 2000 |
| Lellek, Dominik | Philipps-Universität Marburg | 2015 |
| Lellep, Jaan | ||
| Lelli, Federico | Rijksuniversiteit Groningen | 2013 |
| Lelli-Chiesa, Margherita | Humboldt-Universität zu Berlin | 2012 |
| Lellmann, Björn | Imperial College London | 2013 |
| Lellmann, Jan | Ruprecht-Karls-Universität Heidelberg | 2011 |
| Lellmann, Wolfgang | Bergische Universität Wuppertal | 1981 |
| Lellouch, Gabriel | Sorbonne Université | 2019 |
| Lellouch, Joseph | ||
| Lelmi, Jona | Rheinische Friedrich-Wilhelms-Universität Bonn | 2023 |
| Lelond, Olga | Voronezh State University | 2004 |
| Lelong, Jérôme | École Nationale des Ponts et Chaussées | 2007 |
| Lelong, Marie-Pascale | University of Washington | 1989 |
| Lelong, Pierre | École Normale Supérieure Paris | 1941 |
| Lelotte, Rodrigue | Paris Sciences et Lettres | 2023 |
| Lelouche, Ruddy | University of California, Berkeley | 1969 |
| Leloup, Juliette | Université Pierre-et-Marie-Curie - Paris VI | 2009 |
| Leloux-Schuringa, Anke | Universiteit Utrecht | 1984 |
| Lely, Arnold | Rijksuniversiteit Groningen | 1971 |
| Lely, Ursul | Technische Universiteit Delft | 1918 |
| Lelyveld, David Nicolaas | Universiteit Utrecht | 1943 |