There are 97 mathematicians whose last name begin with NEI.
| Nei, Stephen | Stanford University | 2017 |
| Neibergs, J. Shannon | Texas A&M University | 1993 |
| Neiburger, Morris | The University of Chicago | 1945 |
| Neic, Aurel-Vasile | Universität Graz | 2015 |
| Neider, Hermann | Rheinisch-Westfälische Technische Hochschule Aachen | 2014 |
| Neidermaier, Andrew | University of California, San Diego | 2009 |
| Neidhardt, Arnold | University of Wisconsin-Madison | 1978 |
| Neidhardt, Claus | Friedrich-Alexander-Universität Erlangen-Nürnberg | 1996 |
| Neidhardt, Hagen | Akademie der Wissenschaften der DDR | 1979 |
| Neidhardt, Wayne | University of Wisconsin-Madison | 1985 |
| Neidhardt, Wolfgang | Universität Bayreuth | 1987 |
| Neidhart, Johannes | Universität zu Köln | 2014 |
| Neidhart, Ludwig | Universität Augsburg | 2005 |
| Neidhold, Günter | Technische Universität Dresden | 1970 |
| Neidigh, Robert | The Pennsylvania State University | 2006 |
| Neidinger, Richard | University of Texas at Austin | 1984 |
| Neidleman, Leon | University of California, Los Angeles | 1967 |
| Neidmann, Dana | University of Illinois at Urbana-Champaign | 2022 |
| Neidt, Charles | Iowa State University | 1949 |
| Neifar, Wafa | Université Paris-Saclay | 2019 |
| Neifar, Wafa | University of Sfax | 2019 |
| Neifeld, Mark | California Institute of Technology | 1991 |
| Neigenfind, Fritz | Akademie der pädagogischen Wissenschaften in Berlin | 1972 |
| Neigenfind, Fritz | Universität Leipzig | 1959 |
| Neiger, Gilbert | Cornell University | 1988 |
| Neiger, Vincent | École Normale Supérieure de Lyon | 2016 |
| Neiger, Vincent | University of Waterloo | 2016 |
| Neighbors, W | Stanford University | 1996 |
| Neijens, Henricus | Universiteit van Amsterdam | 1954 |
| Neijens, Tim | Universiteit Antwerpen | 2009 |
| Neikes, Rudolf | Rheinisch-Westfälische Technische Hochschule Aachen | 1989 |
| Neikirk, Lewis | University of Pennsylvania | 1903 |
| Neil, Charles | Texas Tech University | 1981 |
| Neil, Ethan | Yale University | 2011 |
| Neil, Joshua | The University of New Mexico | 2011 |
| Neil, Julian | Monash University | 1999 |
| Neil, Martin | London South Bank University | 1992 |
| Neil, Olver | ||
| Neilan, Michael | University of Tennessee - Knoxville | 2009 |
| Neild, Simon | University of Oxford | 2001 |
| Neiling (Meyer), Mattis | Brandenburgische Technische Universität Cottbus | 2004 |
| Neill, Daniel | Carnegie Mellon University | |
| Neill, Douglas | University of Hawaii | 1996 |
| Neill, James | Kansas State University | 1982 |
| Neill, Michael | University of Oregon | 1977 |
| Neill, Neville | Queen's University of Belfast | 1976 |
| Neill, Robert | Columbia University | 1966 |
| Neilson, John | ||
| Neilson, Linda | University of Victoria | 2019 |
| Neilson, Peter | ||
| Neilson, William | University of California, San Diego | 1988 |
| Neiman, Brent | Harvard University | 2008 |
| Neiman, Daniel | University of Massachusetts Amherst | 1992 |
| Neiman, Evgen | Donetsk University | 2017 |
| Neiman, Michael | Rutgers University, New Brunswick | 2009 |
| Neiman, Ofer | Jerusalem University | 2010 |
| Neiman, Susan | Harvard University | 1986 |
| Neimanis, Viesturs | Vilniaus universitetas | 1985 |
| Neimark, Frida | 1944 | |
| Neimark, Yurii | Nizhni Novgorod Nikolai Ivanovich Lobachevski University | 1947 |
| Neimat, Marie Anne | University of California, Berkeley | 1979 |
| Neiner, Coralie | Universiteit van Amsterdam | 2002 |
| Neininger, Ralph | Albert-Ludwigs-Universität Freiburg im Breisgau | 1999 |
| Neira, Ana | University of Texas at Austin | 2002 |
| Neira, Carolina | University of Illinois at Chicago | 1995 |
| Neira, Clara | Universidad Nacional de Colombia | 2000 |
| Neirac, Lucie | École nationale de la statistique et de l'administration économique (ENSAE) | 2023 |
| Neirac, Lucie | Institut Polytechnique de Paris | 2023 |
| Neira Jimenez, Carolina | Rheinische Friedrich-Wilhelms-Universität Bonn | 2010 |
| Neirynck, Anne | Cornell University | 1988 |
| Neis, Georg | Universität des Saarlandes | 2018 |
| Neis, Stefan | Technische Universität Darmstadt | 2002 |
| Neisendorfer, Joseph | Princeton University | 1972 |
| Neishtadt, Ilya | 1975 | |
| Neishuler, Leonid | Lomonosov Moscow State University | 1954 |
| Neisius, Diane | Universität zu Köln | 1993 |
| Neiss, Albrecht | Gottfried Wilhelm Leibniz Universität Hannover | 1972 |
| Neiß, Fritz | Universität Leipzig | 1914 |
| Neisse, Olaf | Universität Augsburg | 1994 |
| Neisse, Ricardo | Universiteit Twente | 2012 |
| Neistadt, Anatoly | ||
| Neiswanger, William | University of Wisconsin-Madison | 1931 |
| Neiswanger, Willie | Carnegie Mellon University | 2019 |
| Neithalath, Ikshu | University of California, Los Angeles | 2021 |
| Neithalath, Mohan Kumar | ||
| Neittaanmäki, Pekka | Jyväskylän yliopisto | 1978 |
| Neitz, Wilfried | Universität Leipzig | 1997 |
| Neitzel, Frank | Technische Universität Berlin | 2003 |
| Neitzel, Ira | Technische Universität Berlin | 2011 |
| Neitzel, Jakob | Universität Hamburg | 2014 |
| Neitzel, Jr., George | The Johns Hopkins University | 1979 |
| Neitzke, Andrew | Harvard University | 2005 |
| Neitzke, John | Michigan State University | 1980 |
| Neiva, Eric | Universitat Politècnica de Catalunya | 2020 |
| Neiva Correia, Antonio | Universiteit van Amsterdam | 1967 |
| Neizvestny, Mark | St. Petersburg State University | 1986 |
| Neizvestny, Mark | Latvijas Universitāte | 1986 |