Wikipedia:WikiProject Mathematics/List of mathematicians (G)
- Gaal, Lisl (Austria, born 1924)
- Gaal, Steven (Hungary, 1924–2016)
- Gabai, David (?, born 1954)
- Gabber, Ofer (Israel, born 1958)
- Gabriel, Pierre (Switzerland, 1933–2015)
- Gabriel, Robert Mark (New Zealand, 1902–1957)
- Gabrielov, Andrei (?, ?–?)
- Gacs, Peter (Hungary, born 1947)
- Gadbled, Christophe (France, 1734–1782)
- Gadgil, Sulochana (India, ?–?)
- Gaffney, Terence (USA, born 1948)
- Gage, Michael (?, ?–?)
- Gage, Paul (?, ?–?)
- Gage, Walter (Canada, 1905–1978)
- Gaifman, Haim (USA, ?–?)
- Gain, Anil Kumar (India, 1919–1978)
- Gaitsgory, Dennis (Israel, ?–?)
- Gakhov, Fyodor (Russia, 1906–1980)
- Gal, Shmuel (Israel, ?–?)
- Galambos, Janos (Hungary, 1940–2019)
- Galatius, Søren (Denmark, born 1976)
- Galbraith, Joseph Allen (Ireland, 1818–1890)
- Galbraith, William (Scotland, 1786–1850)
- de Galdeano, Zoel García (Spain, 1846–1924)
- Gale, David (USA, 1921–2008)
- Galerkin, Boris Grigoryevich (Belarus/Soviet Union, 1871–1945)
- Galicia, Jorge Urrutia (Mexico, ?–?)
- Galil, Zvi (Israel, born 1947)
- Galilei, Alessandro (Italy, 1691–1737)
- Galilei, Galileo (Italy, 1564–1642)
- Le Gall, Jean-François (France, born 1959)
- Gallagher, Isabelle (France, born 1973)
- Gallagher, Patrick X. (USA, 1935–2019)
- Gallai, Tibor (Hungary, 1912–1992)
- Gallarati, Dionisio (Italy, 1923–2019)
- Galler, Bernard (USA, 1928–2006)
- Galletto, Dionigi (Italy, 1932–2011)
- Gallian, Joseph (USA, born 1942)
- de Galliano Pieroni, Giovanni (Italy, 1586–1654)
- Gallier, Jean (France, ?–?)
- Gallivan, Britney (?, born 1986)
- Gallot, Sylvestre (?, born 1948)
- Galloway, Thomas (Scotland, 1796–1851)
- Gallup, George (USA, 1901–1984)
- Galluzzo, Benjamin (USA, ?–?)
- Galois, Évariste (France, 1811–1832)
- Galton, Francis (England, 1822–1911)
- Galtung, Johan (Norway, 1930–2024)
- Galuten, Aaron (?, 1917–1994)
- Galvin, Fred (?, ?–?)
- Gamba, Irene M. (Argentina, ?–?)
- Gamboa, Graciano Ricalde (Mexico, 1873–1942)
- Gamkrelidze, Revaz (Soviet Union, born 1927)
- Gammaitoni, Luca (?, born 1961)
- Gammerman, Alexander (Soviet Union, ?–?)
- Gandy, Robin (England, 1919–1995)
- Gandz, Solomon (?, 1883–1954)
- Ganea, Tudor (Romania, 1922–1971)
- Ganelius, Tord (Sweden, 1925–2016)
- Gang, Liu (China, born 1961)
- Gang, Tian (China, born 1958)
- Gannushkina, Svetlana (Soviet Union, born 1942)
- Gans, David (Czech Republic/Germany, 1541–1613)
- Gantert, Nina (Germany, ?–?)
- Gantmacher, Felix (Soviet Union, 1908–1964)
- Gaon, Vilna (Poland, 1720–1797)
- Garabedian, Paul (Ethnic Armenia, 1927–2010)
- Garaschuk, Kseniya (Canada, born 1982)
- Garaud, Pascale (France, ?–?)
- Garbiński, Kajetan (Poland, 1796–1847)
- Garcia, Arnaldo (Brazil, born 1950)
- García, Rosa García (Spain, born 1965)
- Garcia, Stephan Ramon (USA, ?–?)
- Garcke, Harald (Germany, born 1963)
- Gardiner, Tony (Britain, 1947–2024)
- Gardiner, William (Britain, ?–?)
- Gårding, Lars (Sweden, 1919–2014)
- Gardner, Clifford S. (USA, 1924–2013)
- Gardner, Gerald (USA, 1926–2009)
- Gardner, Martin (USA, 1914–2010)
- Gardner, Robert Brown (?, 1939–1998)
- Garfunkel, Sol (USA, born 1943)
- Garg, Amit (India, born 1978)
- Gargiolli, Guglielmo (Italy, ?–?)
- Gargrave, George (England, 1710–1785)
- Garibaldi, Skip (USA, ?–?)
- Garnett, John B. (USA, born 1940)
- Garrison, D. Randy (Canada, born 1945)
- Garrod, Neil (Britain, ?–?)
- Garsia, Adriano (USA, 1928–2024)
- Gärtner, Jürgen (?, born 1950)
- Garvan, Frank (Australia, born 1955)
- Garvin, Mary Cleophas (USA, 1899–1990)
- Garza, Javier González (Mexico, born 1945)
- Gascoigne, William (England, 1612–1644)
- Gaskin, Thomas (England, 1810–1887)
- Gasper, George (USA, ?–?)
- Gassmann, Fritz (Switzerland, 1899–1990)
- Gastev, Yuri (Soviet Union, 1928–1993)
- Gasymov, Mirabbas (?, 1939–2008)
- Gateaux, René (France, 1889–1914)
- Gates, Dominic (?, ?–?)
- von zur Gathen, Joachim (Germany, born 1950)
- Gattegno, Caleb (Egypt, 1911–1988)
- Gauduchon, Paul (France, born 1945)
- Gauld, David (New Zealand, born 1942)
- Gauquelin, Michel (?, 1928–1991)
- Gauss, Carl Friedrich (Germany, 1777–1855)
- Gautama, Aksapada (India, born 6th century BC)
- Gauthier, Geneviève (Canada, born 1967)
- Gautschi, Walter (Switzerland, born 1927)
- Gavrilović, Bogdan (Serbia/Yugoslavia, 1864–1947)
- Gaziyev, Rahim (Azerbaijan, born 1943)
- Gazulli, Gjon (Albania, 1400–1465)
- Geary, Roy C. (?, 1896–1983)
- Geddes, Keith (Canada, born 1947)
- Gee, Toby (Britain, born 1980)
- Geelen, Jim (?, ?–?)
- van de Geer, Sara (Netherlands/Switzerland, ?–?)
- Gegenbauer, Leopold (Austria, 1849–1903)
- Gehring, Frederick (USA, 1925–2012)
- Gehrke, Mai (Denmark/France, born 1964)
- Geiger, Mark (?, born 1974)
- Geiringer, Hilda (Austria/USA, 1893–1973)
- Geise, Gerhard (Germany, 1930–2010)
- Geisser, Seymour (USA, 1929–2004)
- Gelbart, Abe (USA, 1911–1994)
- Gelbart, Stephen (Israel, born 1946)
- Gelbaum, Bernard Russell (USA, ?–2005)
- Gelenbe, Erol (?, born 1945)
- Gelfand, Israel Moiseyevich (Soviet Union, 1913–2009)
- Gelfond, Alexander (Russia/Soviet Union, 1906–1968)
- Gellibrand, Henry (England, 1597–1637)
- Geman, Donald (USA, born 1943)
- Geman, Hélyette (France, ?–?)
- Geman, Stuart (USA, born 1949)
- Geminus (Ancient Greece, ?–60)
- Genese, Robert William (Ireland, 1848–1928)
- Genest, Christian (Canada, born 1957)
- Gengzhi, Zu (Ancient China, 480–525)
- af Gennäs, Carl Oscar Boije (Sweden, 1849–1923)
- Genocchi, Angelo (Italy, 1817–1889)
- Gentry, Ruth (?, 1862–1917)
- Gentzen, Gerhard (Germany, 1909–1945)
- Geőcze, Zoárd (Hungary, 1873–1916)
- George, J. Alan (?, born 1943)
- Georgescu-Roegen, Nicholas (Romania, 1906–1994)
- Geppert, Maria-Pia (Germany, 1907–1997)
- Gerard of Brussels (?, ?–?)
- Gerbaldi, Francesco (Italy, 1858–1934)
- Gerdt, Vladimir (Russia, 1947–2021)
- Gergen, John Jay (USA, 1903–1967)
- Gergonne, Joseph Diez (France, 1771–1859)
- Gericke, Helmuth (Germany, 1909–2007)
- Gerland (Medieval England, ?–?)
- Gerling, Christian Ludwig (Germany, 1788–1864)
- Germain, Sophie (France, 1776–1831)
- Gernet, Marie (Germany, 1865–1924)
- Geronimus, Yakov (Russia, ?–?)
- Gerono, Camille-Christophe (France, 1799–1891)
- Gershgorin, Semyon Aranovich (Belarus, 1901–1933)
- Gersonides (France, 1288–1344)
- Gersten, Stephen M. (?, born 1940)
- Gerstenberg, Otto (Germany, 1848–1935)
- Gerstenhaber, Murray (USA, 1927–2024)
- Gessel, Ira (USA, born 1950)
- Gessner, Johannes (Switzerland, 1709–1790)
- Gesztesy, Fritz (Austria, born 1953)
- Gethner, Ellen (?, ?–?)
- Getoor, Ronald (?, 1929–2017)
- Getzler, Ezra (?, born 1962)
- Gevrey, Maurice (France, 1884–1957)
- Ghate, Eknath Prabhakar (India, born 1969)
- Ghazzali, Nadia (Morocco/Canada, born 1961)
- Ghetaldi, Marino (Croatia, 1568–1626)
- Ghica, Ion (Romania, 1816–1897)
- Ghika, Alexandru (Romania, 1902–1964)
- Ghosh, Jayanta Kumar (India, 1937–2017)
- Ghoussoub, Nassif (?, born 1953)
- Ghrist, Robert (USA, born 1969)
- Ghyka, Matila (Romania, 1881–1965)
- Ghys, Étienne (France, born 1954)
- Giambelli, Giovanni (Italy, 1879–1935)
- Gibb, David (Scotland, 1883–1946)
- Gibbons, Gary (?, born 1946)
- Gibbs, Josiah Willard (USA, 1839–1903)
- Gibbs, Norman E. (USA, 1941–2002)
- Giblin, Lyndhurst (Australia, 1872–1951)
- Giblin, Peter (England, born 1943)
- Gibson, George (Scotland, 1858–1930)
- Gidas, Basilis (?, ?–?)
- Giedymin, Jerzy (Poland, 1925–1993)
- Gierulanka, Danuta (Poland, 1909–1995)
- Giffen, Robert (Scotland, 1837–1910)
- Gijbels, Irène (Belgium, ?–?)
- Gikhman, Iosif (Ukraine/Soviet Union, 1918–1985)
- Gilani, Kushyar (Medieval Persia, 971–1029)
- Gilbarg, David (USA, 1918–2001)
- Gilbert, Anna C. (?, ?–?)
- Gilbert, Edgar (USA, 1923–2013)
- Gilbreath, Norman Laurence (USA, born 1936)
- Gilkey, Peter B. (USA, born 1946)
- Gill, John (climber) (USA, born 1937)
- Gill, Richard D. (England/Netherlands, born 1951)
- Gillespie, Daniel (?, ?–?)
- Gillespie, Robert Pollock (Scotland, 1903–1977)
- Gillies, Donald A. (?, ?–?)
- Gillies, Donald B. (Canada, 1928–1975)
- Gillies, William King (Scotland, 1875–1952)
- Gillis, Joseph (Israel, 1911–1993)
- Gillman, Leonard (USA, 1917–2009)
- Gilman, Jane Piore (USA, ?–?)
- Gindikin, Simon (Russia, ?–?)
- Gini, Corrado (?, 1884–1965)
- Ginibre, Jean (France, ?–?)
- Ginsburg, Jekuthiel (USA, 1889–1957)
- Ginzburg, David (?, ?–?)
- Ginzburg, Victor (Soviet Union, born 1957)
- Giordano, Annibale (?, 1769–1835)
- De Giorgi, Ennio (Italy, 1928–1996)
- Girard, Albert (Netherlands/France, 1595–1632)
- Girard, Jean-Yves (France, born 1947)
- Girard, Pierre (France, 1765–1836)
- Giraud, Georges (France, 1889–1943)
- Giraud, Jean (France, 1936–2007)
- Girault, Vivette (?, born 1943)
- Giroux, Emmanuel (France, ?–?)
- Girsanov, Igor (?, 1934–1965)
- Gitik, Moti (Israel, ?–?)
- Gittins, John C. (Britain, born 1938)
- Giulio, Carlo Ignazio (Italy, 1803–1859)
- Giusti, Enrico (Italy, born 1940)
- Givens, Wallace (USA, 1910–1993)
- Givental, Alexander (Russia/Soviet Union, ?–?)
- Gjinushi, Skënder (Albania, born 1949)
- Glaeser, Georges (France, 1918–2002)
- Glaisher, James Whitbread Lee (England, 1848–1928)
- Glaister, Paul (Britain, ?–?)
- Glasgow, Josephine Burns (?, 1887–1969)
- Glass, David (Britain, 1911–1978)
- Glass, Gene V. (USA, born 1940)
- Glauberman, George (USA, born 1941)
- Glauert, Muriel (?, 1892–1949)
- Glavieux, Alain (France - d, ?–?)
- Glaz, Sarah (Israel/Romania, born 1947)
- Gleason, Andrew M. (USA, 1921–2008)
- Glendinning, Paul (Britain, ?–?)
- Glenie, James (Scotland, 1750–1817)
- Glenn, Oliver Edmunds (USA, ?–?)
- Glimm, James (USA, born 1934)
- Glivenko, Valery (Soviet Union, 1896–1940)
- Globevnik, Josip (Slovenia, born 1945)
- Glover, James Waterman (USA, 1868–1941)
- Glowinski, Roland (France, 1937–2022)
- Gluesing-Luerssen, Heide (Germany, ?–?)
- Glushkov, Victor (Soviet Union/Russia, 1923–1982)
- Gmeiner, Josef Anton (Austria, 1862–1926)
- von Gmunden, Johannes (Germany, 1380–1442)
- Gnanadesikan, Ramanathan (India, 1932–2015)
- Gnedenko, Boris Vladimirovich (Russia/Soviet Union, 1912–1995)
- Goddard, Peter (Britain, born 1945)
- Godeaux, Lucien (Belgium, 1887–1975)
- Gödel, Kurt (USA/Austria, 1906–1978)
- Godement, Roger (France, 1921–2016)
- Godsil, Chris (?, ?–?)
- Godske, Carl Ludvig (Norway, 1906–1970)
- Godunov, Sergei K. (Russia/Soviet Union, 1929–2023)
- Goemans, Michel (Belgium, born 1964)
- Goertzel, Ben (USA, born 1966)
- Goette, Barbara (?, 1908–1997)
- Gog, Julia (?, ?–?)
- Gohberg, Israel (Israel/Soviet Union, 1928–2009)
- Goins, Edray Herber (?, born 1972)
- Gojak, Linda (?, ?–?)
- Gökdoğan, Nüzhet (?, 1910–2003)
- Gołąb, Stanisław (Poland, 1902–1980)
- Golay, Marcel J. E. (Switzerland/USA, 1902–1989)
- Gold, Bonnie (USA, ?–?)
- Gold, E. Mark (USA, born 1936)
- Goldbach, Christian (Germany, 1690–1764)
- Goldberg, Anatolii (Ukraine/Israel, 1930–2008)
- Goldberg, Ian (?, born 1973)
- Goldberg, Lisa (USA, born 1956)
- Goldberg, Moshe (Israel, born 1945)
- Goldblatt, Robert (New Zealand, born 1949)
- Golden, Kenneth M. (?, ?–?)
- Goldfarb, Donald (USA, born 1941)
- Goldfarb, Warren (USA, born 1949)
- Goldfeld, Dorian M. (USA, born 1947)
- Goldie, Alfred (England, 1920–2005)
- Goldin, Rebecca (USA, ?–?)
- Goldman, Oscar (USA, 1925–1986)
- Goldman, Ron (USA, ?–?)
- Goldman, Samuel (Britain, 1912–2007)
- Goldman, William (?, born 1955)
- Goldsbrough, George Ridsdale (England, 1881–1963)
- Goldschmidt, Carl Wolfgang Benjamin (Germany, 1807–1851)
- Goldschmidt, Christina (Britain, ?–?)
- Goldschmidt, David M. (?, born 1942)
- Goldstein, Catherine (France, born 1958)
- Goldstein, Gisèle Ruiz (?, born 1958)
- Goldstein, Harvey (Britain, 1939–2020)
- Goldstein, Jerome (USA, born 1941)
- Goldstein, Sydney (Britain, 1903–1989)
- Goldstern, Martin (Austria, born 1963)
- Goldstine, Adele (?, 1920–1964)
- Goldstine, Herman (USA, 1913–2004)
- Goldston, Daniel (USA, born 1954)
- Goldwasser, Shafi (?, born 1959)
- Goles, Eric (Chile, born 1951)
- Golius, Jacobus (Netherlands, 1596–1667)
- Golod, Evgeny (Russia, 1935–2018)
- Golomb, Michael (USA, 1909–2008)
- Golomb, Solomon W. (USA, 1932–2016)
- Golub, Gene H. (USA, 1932–2007)
- Golubitsky, Marty (USA, born 1945)
- Golumbic, Martin Charles (USA/Israel, born 1948)
- Gombaud, Antoine (France, 1607–1684)
- Gombrich, Carl (England, born 1965)
- Gomes, Ruy Luís (Portugal, 1905–1984)
- Gómez, Concha (Italy/Cuba, ?–?)
- Gomide, Elza Furtado (Brazil, 1925–2013)
- Gompertz, Benjamin (England, 1779–1865)
- Gompf, Robert (USA, born 1957)
- Gonchar, Andrey Aleksandrovich (Russia/Soviet Union, 1931–2012)
- Goncharov, Alexander (USA/Soviet Union, born 1960)
- Goncharov, German (Soviet Union/Russia, 1928–2009)
- Gong, Sherry (USA, ?–?)
- Gonseth, Ferdinand (Switzerland, 1890–1975)
- Gonthier, Georges (?, ?–?)
- González-Acuña, Francisco Javier (Mexico, born 1942)
- Good, I. J. (England/USA, 1916–2009)
- Good, Phillip (Canada, born 1937)
- Goodman-Strauss, Chaim (?, born 1967)
- Goodman, Adolph Winkler (USA, 1915–2004)
- Goodman, Jacob E. (?, 1933–2021)
- Goodnight, James (USA, born 1943)
- Goodrich, Michael T. (?, ?–?)
- Goodstein, Judith R. (?, ?–?)
- Goodstein, Reuben (England, 1912–1985)
- Goodwillie, Thomas (mathematician) (?, born 1954)
- Goodwin, Brian (Canada, 1931–2009)
- Goodwin, Richard M. (?, 1913–1996)
- Goormaghtigh, René (Belgium, 1893–1960)
- Goos, Merrilyn (Australia, ?–?)
- Göpel, Adolph (Germany, 1812–1847)
- Goppa, Valerii Denisovich (Russia, ?–?)
- Goppa, Valery (Russia, ?–?)
- Goranko, Valentin (?, born 1959)
- Gordan, Paul (Germany, 1837–1912)
- Gordina, Maria (Russia, born 1968)
- Gordon, Basil (USA, 1931–2012)
- Gordon, Cameron (?, born 1945)
- Gordon, Carolyn S. (USA, born 1950)
- Gordon, Julia (Canada, ?–?)
- Gorenflo, Rudolf (Germany, 1930–2017)
- Gorenstein, Daniel (USA, 1923–1992)
- Goresky, Mark (Canada, born 1950)
- Gorgani, Abu Said (Medieval Persia, ?–845)
- Gorgidze, Alexey (Soviet Union, 1907–1992)
- Goriely, Alain (?, ?–?)
- Goryunov, Victor (Russia, ?–?)
- Gosper, Bill (USA, born 1943)
- Goss, David (USA, ?–?)
- Gossard, Harry Clinton (?, 1884–1954)
- Gosse, René (France, 1883–1943)
- Gosset, Thorold (Britain, 1869–1962)
- Gosset, William Sealy (England, 1876–1937)
- de Gosson, Maurice A. (Austria, born 1948)
- Goswami, Debashish (India, ?–?)
- Goswami, Prabodh Chandra (India, 1911–1984)
- de Gottignies, Gilles-François (Belgium, 1630–1689)
- Gottlieb, David (mathematician) (?, 1944–2008)
- Gottschalk, Walter (USA, 1918–2004)
- Göttsche, Lothar (Germany, born 1961)
- Gottwald, Siegfried (Germany, 1943–2015)
- Götze, Friedrich (?, born 1951)
- Goudon, Thierry (France, born 1969)
- Gough, John (England, 1757–1825)
- Gould, Alice Bache (USA, 1868–1953)
- Gould, Henry W. (USA, born 1928)
- Gould, Ronald (?, born 1950)
- Goulden, Ian (Canada, ?–?)
- Goursat, Édouard (France, 1858–1936)
- Goussarov, Mikhail (Russia, 1958–1999)
- Gouvêa, Fernando Q. (Brazil, ?–?)
- Gover, A. Rod (New Zealand, ?–?)
- Govindasvāmi (Medieval India, 800–860)
- Govorun, Nikolay (Russia, 1930–1989)
- Gow, James (?, 1854–1923)
- Gowers, Timothy (England, born 1963)
- Grabeel, Gene (?, 1920–2015)
- Grabiner, Judith (USA, born 1938)
- Grabois, Neil R. (?, 1935–2024)
- Grabowski, Janusz (Poland, born 1955)
- Grace, John Hilton (Britain, 1873–1958)
- Grad, Harold (USA, 1923–1986)
- Gradić, Stjepan (Croatia, 1613–1683)
- Graefe, Eva-Maria (Britain/Germany, ?–?)
- Graev, Mark Iosifovich (Soviet Union, 1922–2017)
- Graf, Johann Heinrich (?, ?–?)
- Graffi, Dario (Italy, 1905–1990)
- Gragg, William B. (?, 1936–2016)
- Graham, C. Robin (?, ?–?)
- Graham, Ronald (USA, 1935–2020)
- Graham, Sidney (USA, born 1950)
- Graliński, Jan (Poland, 1895–1942)
- Gram, Jørgen Pedersen (Denmark, 1850–1916)
- Grambsch, Patricia (USA, ?–?)
- Grammateus, Henricus (Germany, 1495–1525)
- Grandi, Guido (Italy, 1671–1742)
- Grandi, Luigi Guido (Italy, 1671–1742)
- Granger, Clive (Britain, 1934–2009)
- Granville, Andrew (Britain, born 1962)
- Granville, Evelyn Boyd (USA, 1924–2023)
- Granville, William Anthony (USA, 1864–1943)
- Grassi, Antonella (?, ?–?)
- Grassi, Orazio (Italy, 1583–1654)
- Grassmann, Hermann (Germany, 1809–1877)
- Grattan-Guinness, Ivor (England, 1941–2014)
- Grätzer, George (Canada, born 1936)
- Grauert, Hans (Germany, 1930–2011)
- Graunt, John (England, 1620–1674)
- Graustein, Mary (?, 1884–1972)
- Graustein, William Caspar (USA, 1888–1941)
- Grave, Dmitry (Ukraine/Russia, 1863–1939)
- Graves, Charles (bishop) (Ireland, 1812–1899)
- Graves, John T. (Ireland, 1806–1870)
- Gravesande, Willem 's (?, 1688–1742)
- Gray, Alfred (USA, 1939–1998)
- Gray, Andrew (Scotland, 1847–1925)
- Gray, James (Scotland, 1876–1934)
- Gray, Jeremy (England, born 1947)
- Gray, John (mathematician) (Britain, ?–1769)
- Gray, Marion Cameron (Scotland, 1902–1979)
- Gray, Mary W. (USA, born 1939)
- Greatorex, Ralph (England, ?–1675)
- Greaves, John (England, 1602–1652)
- Grebenik, Eugene (Britain, 1919–2001)
- Grebogi, Celso (Brazil, born 1947)
- Green, Albert E. (Britain, 1912–1999)
- Green, Ben (England, born 1977)
- Green, George (England, 1793–1841)
- Green, Herbert S. (?, 1920–1999)
- Green, Judy (mathematician) (?, ?–?)
- Green, Michael (physicist) (?, born 1946)
- Green, Peter (Britain, ?–?)
- Green, Sandy (?, 1926–2014)
- Greenbaum, Anne (USA, ?–?)
- Greenberg, Marvin (?, 1935–2017)
- Greenberg, Ralph (USA, born 1944)
- Greene, Curtis (USA, ?–?)
- Greene, Robert Everist (USA, born 1943)
- Greene, William Batchelder (USA, 1819–1878)
- Greenfield, Tony (?, 1930–2019)
- Greengard, Leslie (USA, ?–?)
- Greenhill, Alfred George (Britain, 1847–1927)
- Greenhill, Catherine (Australia, ?–?)
- Greenland, Sander (USA, ?–?)
- Greenspan, Harvey P. (USA, born 1933)
- Greenstreet, William John (?, 1961–1930)
- Greenwald, Sarah J. (USA, ?–?)
- Greenwood, Cindy (Canada, ?–?)
- Greenwood, Isaac (USA, 1702–1745)
- Greenwood, Major (England, 1880–1949)
- Gregorio, Stefano da San (Italy, ?–?)
- Gregory, David (Scotland, 1659–1708)
- Gregory, Duncan (Scotland, 1813–1844)
- Gregory, James (Scotland, 1638–1675)
- Gregory, Olinthus (England, 1774–1841)
- Gregory, Ruth (Britain, ?–?)
- Greig, John (England, 1759–1819)
- Greig, Margaret (England, 1922–1999)
- Greither, Cornelius (?, born 1956)
- Greitzer, Samuel L. (?, 1905–1988)
- Grenander, Ulf (Sweden/USA, 1923–2016)
- Grenier, Emmanuel (France, born 1970)
- Gretschel, Heinrich Friedrich (Germany, 1830–1892)
- Greville, Thomas N.E. (USA, 1910–1998)
- de Grey, Nigel (?, 1886–1951)
- Griebel, Michael (Germany, ?–?)
- Griess, Robert (?, born 1945)
- Griffith, Phillip (USA, born 1940)
- Griffiths, John (Wales, 1830s–1916)
- Griffiths, Phillip (USA, born 1938)
- Griffiths, Robert (Australia, ?–?)
- Grigorchuk, Rostislav (Ukraine/Soviet Union, born 1953)
- Grigori, Laura (France, ?–?)
- Grigoriev, Dima (Russia/France, born 1954)
- Grigorieva, Ellina (Russia, ?–?)
- Grigsby, Elisenda (?, ?–?)
- Grima, Clara (Spain, born 1971)
- Grimaldi, Dan (?, born 1952)
- Grimaldi, Francesco Maria (Italy, 1618–1663)
- Grimaldi, Ralph (USA, born 1943)
- Griminelli, Domenico (Italy, ?–?)
- Grimmett, Geoffrey (England, born 1950)
- Grimshaw, Margaret (Britain, 1905–1990)
- Grīnbergs, Emanuels (Latvia, 1911–1982)
- Grindrod, Peter (Britain, born 1959)
- Grinfeld, Pavel (USA, born 1974)
- Grischow, August Nathanael (Germany, 1726–1760)
- Griss, George F. C. (?, 1898–1953)
- Gröbli, Walter (Switzerland, 1852–1903)
- Grobner, Harald (Austria, born 1980)
- Gröbner, Wolfgang (Austria, 1899–1980)
- Grodal, Birgit (Denmark, 1943–2004)
- Groetsch, Charles W. (?, born 1945)
- Grohe, Martin (Germany, born 1967)
- Grojnowski, Ian (Australia, ?–?)
- Gromoll, Detlef (Germany, 1938–2008)
- Gromov, Mikhael (mathematician) (Russia/Soviet Union, born 1943)
- Grönwall, Thomas Hakon (Sweden, 1877–1932)
- de Groot, Johannes (Netherlands, 1914–1972)
- Gross, Benedict (USA, born 1950)
- Gross, Herbert (USA, 1929–2020)
- Gross, Kenneth I. (?, 1938–2017)
- Gross, Leonard (USA, born 1931)
- Gross, Louis J. (USA, born 1950)
- Gross, Mark (mathematician) (?, born 1965)
- Grossberg, Rami (Israel, ?–?)
- Grosseteste, Robert (?, 1170s–1253)
- Grosshans, Frank (USA, ?–?)
- Grossi, Esther Pillar (Brazil, born 1936)
- Grossman, Edna (USA, ?–?)
- Grossmann, Alex (?, 1930–2019)
- Grossmann, Marcel (Hungary/Switzerland, 1878–1936)
- Grosswald, Emil (USA, 1912–1989)
- Groszek, Marcia (?, ?–?)
- Grothendieck, Alexander (France, 1928–2014)
- Grötschel, Martin (Germany, born 1948)
- Grötzsch, Herbert (?, 1902–1993)
- Grove, Charles Clayton (USA, ?–?)
- Grove, Karsten (Denmark, ?–?)
- Grozdev, Sava (Bulgaria, born 1950)
- Grubb, Gerd (Denmark, born 1939)
- Gruber, Peter M. (Austria, 1941–2017)
- Grue, John (Norway, born 1957)
- Gruenberg, Karl W. (Britain, 1928–2007)
- Grün, Otto (?, ?–?)
- Grünbaum, Branko (USA, 1929–2018)
- Grundman, Helen G. (USA, ?–?)
- Grundy, Patrick Michael (?, ?–?)
- Grunsky, Helmut (Germany, 1904–1986)
- Grünwald, Géza (Hungary, 1910–1943)
- Grünwald, Vittorio (Italy, 1855–1943)
- Grunwald, Wilhelm (Germany, 1909–1989)
- Grzegorczyk, Andrzej (Poland, 1922–2014)
- Grzepski, Stanisław (Poland, 1524–1570)
- Gu, Weiqing (China, ?–?)
- de Gua de Malves, Jean Paul (France, 1713–1785)
- de Gualda, Juan Gutiérrez (Spain, ?–?)
- Guan, Meigu (China, born 1934)
- Guan, Pengfei (Canada/China, ?–?)
- Guangqi, Xu (China, 1562–1633)
- Guangyuan, Sun (China, 1900–1979)
- Guanrong, Chen (?, born 1948)
- Guarini, Guarino (Italy, 1624–1683)
- Guber, Rebeca (Argentina, 1925–2020)
- Gubler, Salomon Eduard (?, ?–?)
- Guccia, Giovanni Battista (Italy, 1855–1914)
- Guckenheimer, John (USA, born 1945)
- Gudermann, Christoph (Germany, 1798–1852)
- Gudkov, Dmitry (Russia, 1918–1992)
- Gudmundsson, Sigmundur (Iceland/Sweden, born 1960)
- Guéant, Olivier (France, ?–?)
- Guénin, Marcel (Switzerland, born 1937)
- Guenther, Christine (?, ?–?)
- Guerry, André-Michel (France, 1802–1866)
- Guest, David (Britain, 1911–1938)
- Guggenbühl, Laura (?, 1901–1985)
- Guggenheimer, Heinrich (USA, 1924–2021)
- Guglielmini, Domenico (Italy, ?–?)
- Guicciardini, Niccolò (?, born 1957)
- Guillemin, Victor (USA, born 1937)
- Guillopé, Colette (France, ?–?)
- Guimarães, Rodolfo (Portugal, 1866–1918)
- Guinand, Andrew (?, 1912–1987)
- Guionnet, Alice (France, born 1969)
- Guisnée, Nicolas (Germany, ?–?)
- Guitel, Geneviève (France, 1895–1982)
- Guldberg, Alf Victor (Norway, 1866–1936)
- Guldberg, Cato Maximilian (Norway, 1836–1902)
- Guldin, Paul (Switzerland, 1577–1643)
- Gulick, Denny (USA, ?–?)
- Guliyev, Vagif (Azerbaijan, born 1957)
- Gull, Stephen (?, ?–?)
- Gumbel, Emil Julius (Germany, 1891–1966)
- Gumel, Abba (Canada, born 1966)
- Gumpach, Johannes Von (Germany, ?–?)
- Gundelfinger, Sigmund (Germany, 1846–1910)
- Gunning, Robert (?, born 1931)
- Gunnlaugsson, Björn (Iceland, 1788–1876)
- Gunter, Edmund (Britain, 1581–1626)
- Günther, Nikolai (Russia, 1871–1941)
- Gunzburger, Max (USA, ?–?)
- Gupta, Anadi Sankar (India, 1932–2012)
- Gupta, Hansraj (India, 1902–1988)
- Gupta, Kanta (Canada, 1938–2016)
- Gupta, Neena (India, ?–?)
- Gupta, R. P. (?, ?–?)
- Gupta, Radha Charan (India, 1935–2024)
- Guralnick, Robert (USA, ?–?)
- Gurevich, Aleksandr (?, 1930–2023)
- Gurkewitz, Rona (USA, ?–?)
- Gurklis, Albin (USA, 1918–2008)
- Gürsey, Feza (Turkey, 1921–1992)
- Gurtin, Morton (USA, ?–?)
- Guruswami, Venkatesan (India, born 1976)
- Gusein-Zade, Sabir (Russia, born 1950)
- Gustafsson, Bertil (Sweden, born 1939)
- Gut, Max (Switzerland, 1898–1988)
- Gutenmaher, Lev (Soviet Union/Russia, 1908–1981)
- Guth, Larry (USA, born 1977)
- Guthrie, Francis (South Africa, 1831–1899)
- Gutiérrez, Juan María (Argentina, 1809–1878)
- Gutierrez, Rochelle (?, ?–?)
- Gutin, Gregory (?, born 1957)
- Gutman, Iván (Serbia, born 1947)
- Gutmann, Peter (?, ?–?)
- Gutt, Simone (Belgium, born 1956)
- Guttman, Louis (Israel, 1916–1987)
- Gutzmer, August (?, ?–?)
- Gutzwiller, Martin (?, 1925–2014)
- Guy, Michael (Britain, ?–?)
- Guy, Richard K. (England/Britain, 1916–2020)
- Guy, William (Britain, 1810–1885)
- Guyot, Edmé-Gilles (France, 1706–1786)