There are 26 mathematicians whose last name begin with SPEI.
| Speicher, Marco | Universität des Saarlandes | 2019 |
| Speicher, Maximilian | Technische Universität Chemnitz | 2016 |
| Speicher, Michael | Universität Dortmund | 1992 |
| Speicher, Regina | University of Connecticut | 2005 |
| Speicher, Roland | Ruprecht-Karls-Universität Heidelberg | 1989 |
| Speicher, Sebastian | Universität Rostock | 2007 |
| Speidel, Lothar | Technische Universität Carolo-Wilhelmina zu Braunschweig | 1953 |
| Speight, Adam | Carnegie Mellon University | 2005 |
| Speight, Gareth | University of Warwick | 2013 |
| Speight, James | University of Durham | 1995 |
| Speight, Samuel | University of Oxford | 2023 |
| Speight, William | Rice University | 1998 |
| Speights, David | University of California, Los Angeles | 1997 |
| Speijert van der Eyk, Simon | Universiteit Leiden | |
| Speijker, Lennaert | Technische Universiteit Delft | 2007 |
| Speirs, II, William | Purdue University | 2007 |
| Speis, Athanasios | University of California, Irvine | 1987 |
| Speiser, Ambros | ETH Zürich | 1950 |
| Speiser, Andreas | Georg-August-Universität Göttingen | 1909 |
| Speiser, David | Universität Basel | 1954 |
| Speiser, Michel | ETH Zürich | 2013 |
| Speiser, Peter | Universität Basel | 1948 |
| Speiser, Robert | Cornell University | 1969 |
| Speisman, Gerald | California Institute of Technology | 1955 |
| Speissegger, Patrick | University of Illinois at Urbana-Champaign | 1996 |
| Speitkamp, Fritz | Rheinische Friedrich-Wilhelms-Universität Bonn | 1939 |