There are 81 mathematicians whose last name begin with RIS.

Ris, Frederic University of Oxford 1972
Risager, Morten Aarhus University 2003
Risbey, James Massachusetts Institute of Technology 1994
Risch, Daniel Université de Fribourg 2007
Risch, Neil University of California, Los Angeles 1979
Risch, Rainer-Rudolf Gottfried Wilhelm Leibniz Universität Hannover 1982
Risch, Robert University of California, Berkeley 1968
Risch, Tore
Rischall, Isaac University of Wisconsin-Madison 1998
Rischke, Roman Technische Universität München 2016
Rischter, Rick Instituto de Matemática Pura e Aplicada 2017
Riscos-Fernández, Agustín Universidad de Sevilla 1984
Riscos-Núñez, Agustín Universidad de Sevilla 2004
Risebro, Nils Universitetet i Oslo 1991
Riseman, Edward Cornell University 1969
Riser, Roman ETH Zürich 2012
Rishel, Raymond University of Wisconsin-Madison 1959
Rishel, Tom University of Pittsburgh 1970
Rishikesh, University of Waterloo 2011
Rishmawi, Shireen The American University 2005
Risi, Camille Université Pierre-et-Marie-Curie - Paris VI 2009
Rising, Gerald New York University 1965
Rising, William University of Massachusetts Amherst 1989
Rising, III, Hawley University of Massachusetts Amherst 1989
Risk, Clifford Massachusetts Institute of Technology 1967
Riska, Alma College of William and Mary 2002
Riske, Amanda Arizona State University 2022
Risken, Hannes Rheinisch-Westfälische Technische Hochschule Aachen 1962
Riskin, Adrian University of California, Davis 1989
Riskin, Eve Stanford University 1990
Risko, Kenneth The University of North Carolina at Chapel Hill 1982
Risku, Pekka Jyväskylän yliopisto 1996
Risler, Jean-Jacques Université Paris Diderot - Paris 7 1975
Risler, Max Technische Universität Darmstadt 2009
Risman, Lawrence Harvard University 1973
Rismanchian, Mohammad Reza Ferdowsi University of Mashhad 2001
Risnawita, Institut Teknologi Bandung 2021
Rispens, Gijsbert Rijksuniversiteit Groningen 2010
Rispens, Jan Universiteit Utrecht 1974
Rispens, Taede Rijksuniversiteit Groningen 2004
Rispin, Peter California Institute of Technology 1967
Riss, Elena St. Petersburg State University 1990
Riss, Mariane Université Paris Diderot - Paris 7 2001
Riss, Uwe Philipps-Universität Marburg 1989
Rissanen, Juha Jyväskylän yliopisto 2002
Risse, Kilian Kungliga Tekniska Högskolan (KTH) 2022
Risse, Mathias Princeton University 2000
Risselada, Herre Rijksuniversiteit Groningen 2009
Risselman, William University of Minnesota - Twin Cities 1928
Risser, Hilary Southern Methodist University 2005
Risser, Mark The Ohio State University 2015
Risser, René Université de Paris 1925
Risset, Jean-Claude Université de Paris 1967
Rissing, Ben Massachusetts Institute of Technology 2013
Rissler, Matthew University of Notre Dame 2008
Rissler, Walter Columbia University 1966
Rissner, Roswitha Technische Universität Graz 2015
Risso, Mariano Universidad Nacional del Centro de la Provincia de Buenos Aires 2016
Rist, Thomas Universität des Saarlandes 1995
Ristad, Eric Massachusetts Institute of Technology 1990
Ristau, Hans Universität Hamburg 1935
Ristau, Henry Universität Rostock 2013
Ristau, Lukas Technische Universität Kaiserslautern 2019
Ristenpart, Friedrich Universität Straßburg 1892
Ristenpart, Thomas 2010
Rister, Thomas Rheinisch-Westfälische Technische Hochschule Aachen 1998
Risteski, Andrej 2017
Ristic, Branko Queensland University of Technology 1995
Ristic, Swetomir Universität Leipzig 1910
Ristić, Miroslav University of Niš 2002
Ristić, Vladimir University of Kragujevac 2013
Ristig, Alexander Humboldt-Universität zu Berlin 2015
Ristig, Manfred Universität zu Köln 1966
Ristovski, Gordan Jacobs University Bremen 2017
Ristovski, Kosta Temple University 2012
Ristow, Allan University of Wisconsin-Milwaukee 1976
Ristow, Dietrich Rheinische Friedrich-Wilhelms-Universität Bonn 1969
Ristow, Gerald Gottfried Wilhelm Leibniz Universität Hannover 1990
Ristroph, Leif Cornell University 2011
Ristroph, Robert Louisiana State University 1968
Risy, Gerrit Otto-von-Guericke-Universität Magdeburg 2007