There are 90 mathematicians whose last name begin with SIG.
| Siga, Lucas | University of California, San Diego | 2013 |
| Sigal, Bronislava | Stanford University | 1998 |
| Sigal, E. | Institute of Mathematics, Moldavian Academy of Science | 1970 |
| Sigal, Israel | Tel Aviv University | 1976 |
| Sigal, Jesse | The University of Edinburgh | 2024 |
| Sigal, Leonid | Brown University | 2008 |
| Sigal, Ron | New York University | 1983 |
| Sigalla, Suzanne | Institut Polytechnique de Paris | 2022 |
| Sigalla, Suzanne | École nationale de la statistique et de l'administration économique (ENSAE) | 2022 |
| Sigalotti, Laura | Università di Roma La Sapienza | 2010 |
| Sigalotti, Mario | Scuola Internazionale Superiore di Studi Avanzati (SISSA) | 2003 |
| Sigalov, Aleksandr | Lomonosov Moscow State University | 1945 |
| Sigalov, Ilya | Massachusetts Institute of Technology | 2006 |
| Sigamani, Valarmathi | Bharathidasan University | 2003 |
| Siganevich, Gelena | Moscow Aviation Institute | 1992 |
| Sigarkanti, Sivashanappa | Gulbarga University | 1992 |
| Sigarreta Almira, José María | Universidad Carlos III de Madrid | 2007 |
| Sigdel, Kamana | Technische Universiteit Delft | 2011 |
| Sigg, Beat | ETH Zürich | 1973 |
| Sigg, Henri | Université de Genève | 1915 |
| Sigg, Markus | Universität Konstanz | 2006 |
| Sigg, Stefan | Rheinische Friedrich-Wilhelms-Universität Bonn | 1994 |
| Siggelkow, Constantin | Technische Universität München | 2025 |
| Siggers, Jennifer | University of Cambridge | 2003 |
| Siggers, Mark | Emory University | 2005 |
| Siggia, Eric | Harvard University | 1971 |
| Sighireanu, Mihaela | Université Joseph Fourier Grenoble I | 1999 |
| Sigillito, Vincent | University of Maryland College Park | 1965 |
| Sigismondi, Gabriele | Cornell University | 1989 |
| Sigl, Juliane | Technische Universität München | 2018 |
| Sigler, Laurence | Columbia University | 1963 |
| Sigley, Daniel | University of Illinois at Urbana-Champaign | 1932 |
| Sigley, Sarah | University of Leeds | 2019 |
| Sigloch, Georg | University of Toronto | 2009 |
| Sigloch, Helene | Albert-Ludwigs-Universität Freiburg im Breisgau | 2016 |
| Sigman, Hilary | Massachusetts Institute of Technology | 1994 |
| Sigman, Karl | University of California, Berkeley | 1986 |
| Sigmon, Kermit | University of Florida | 1966 |
| Sigmon, Neil | North Carolina State University | 1995 |
| Sigmon, Timothy | Duke University | 1979 |
| Sigmond, Michael | Technische Universiteit Eindhoven | 2003 |
| Sigmund, Karl | Universität Wien | 1968 |
| Sigmund, Wladimir | Georg-August-Universität Göttingen | 1974 |
| Signahl, Mikael | Lund University | 2003 |
| Signell, Peter | University of Rochester | 1958 |
| Signer, Claude | Université de Genève | 1995 |
| Signerska, Justyna | Polska Akademia Nauk | 2013 |
| Signes, Teresa | Universidad Complutense de Madrid | 2000 |
| Signing, Lazarus | Université de Yaoundé I | 2009 |
| Signoles, Julien | Université Paris-Sud XI - Orsay | 2006 |
| Signorelli, Mirko | Rijksuniversiteit Groningen | 2017 |
| Signorelli, Mirko | Università degli Studi di Padova | 2017 |
| Signorello, Beatrice | Technische Universität Wien | 2022 |
| Signoret, F. | Université de Nice-Sophia Antipolis | 1988 |
| Signoret Poillon, Carlos José Enrique | Universidad Nacional Autónoma de México (UNAM) | 1993 |
| Signoretto, Marco | Katholieke Universiteit Leuven | 2011 |
| Signori, Andrea | Università degli Studi di Milano-Bicocca | 2020 |
| Signori, Andrea | Vrije Universiteit Amsterdam | 2016 |
| Signori, Daniele | The Pennsylvania State University | 2009 |
| Signoriello, Stefano | Friedrich-Alexander-Universität Erlangen-Nürnberg | 2017 |
| Signorini, Antonio | Scuola Normale Superiore di Pisa | 1909 |
| Signorini, Giulia | Università di Pisa | 2020 |
| Signorini, Marianna | Politecnico di Milano | 2016 |
| Signorino, Curtis | Harvard University | 1998 |
| Signorovitch, James | Harvard University | 2007 |
| Sigovtsev, Gennady | Petrozavodsk University | 1983 |
| Sigrist, Fabio | ETH Zürich | 2013 |
| Sigrist, François | ETH Zürich | 1967 |
| Sigrist, Manfred | ETH Zürich | 1989 |
| Sigrist, Niklaus | ETH Zürich | 1975 |
| Sigrist, Rachel | University of Nottingham | 2010 |
| Sigrist, Werner | ETH Zürich | 1943 |
| Sigron, Moriah | Hebrew University of Jerusalem | 2010 |
| Sigstam, Inger | Uppsala universitet | 1990 |
| Sigstam, Kibret | Uppsala universitet | 2004 |
| Sigurani, Manuela | Universität Bayreuth | 2016 |
| Sigurbjörnsson, Börkur | Universiteit van Amsterdam | 2006 |
| Sigurðardóttir, Álfheiður Edda | University of Iceland | 2024 |
| Sigurdson, Lorenz | California Institute of Technology | 1986 |
| Sigurdsson, Bjorgvin | Stanford University | 2008 |
| Sigurdsson, Gunnar | University of Washington | 1983 |
| Sigurdsson, Johann | The University of Chicago | 2004 |
| Sigurdsson, Jon Karl | University of California, Santa Barbara | 2013 |
| Sigurdsson, Ragnar | Lund University | 1984 |
| Sigurðsson, Baldur | Central European University | 2015 |
| Sigurðsson, Sven | University of Dundee | 1973 |
| Sigurgeirsson, Hersir | Stanford University | 2001 |
| Sigurjónsson, Styrmir | University of Iceland | 2006 |
| Sigurjónsson, Styrmir | Stanford University | 2006 |
| Sigut, Aaron |