This is a list of International Congresses of Mathematicians Plenary and Invited Speakers. Being invited to talk at an International Congress of Mathematicians has been called "the equivalent, in this community, of an induction to a hall of fame." The current list of Plenary and Invited Speakers presented here is based on the ICM's post-WWII terminology, in which the one-hour speakers in the morning sessions are called "Plenary Speakers" and the other speakers (in the afternoon sessions) whose talks are included in the ICM published proceedings are called "Invited Speakers". In the pre-WW II congresses the Plenary Speakers were called "Invited Speakers".

Overview During the 1900 Congress in Paris, France, David Hilbert announced his famous list of Hilbert's problems. At the 1954 Congress of Mathematicians in Amsterdam, Richard Brauer announced his program for the classification of finite simple groups. Alexander Grothendieck in his plenary lecture at the 1958 Congress outlined his programme "to create arithmetic geometry via a (new) reformulation of algebraic geometry, seeking maximal generality." At the 1962 Congress in Stockholm Kiyosi Itô lectured on how to combine differential geometry and stochastic analysis, and this led to major advances in the 60s and 70s.

Speakers 1897, Zürich

Jules Andrade Léon Autonne Émile Borel Francesco Brioschi Hermann Brunn Nikolai Bugaev Cesare Burali-Forti Charles Jean de la Vallée Poussin Gustaf Eneström Federigo Enriques Gino Fano Zoel García de Galdeano Francesco Gerbaldi Paul Gordan Jacques Hadamard Adolf Hurwitz Felix Klein Gino Loria Wilhelm Franz Meyer Giuseppe Peano Ivan Pervushin Émile Picard Salvatore Pincherle Henri Poincaré Gusztáv Rados

Theodor Reye Ernst Schröder Cyparissos Stephanos Ludwig Stickelberger Aurel Stodola H. Weber Hieronymus Georg Zeuthen Nikolay Yegorovich Zhukovsky

1900, Paris

Federico Amodeo Léon Autonne Ivar Otto Bendixson Jean Boccardi Émile Borel Moritz Cantor Alfredo Capelli Élie Cartan Zoel García de Galdeano Leonard Eugene Dickson Philbert Maurice d'Ocagne Jules Drach Erik Ivar Fredholm Rikitaro Fujisawa Ángel Gallardo Jacques Hadamard Harris Hancock David Hilbert Pierre Adolphe Issaly Eugen Jahnke Victor Jamet Helge von Koch Léopold Leau Edgar Odell Lovett Alexander Macfarlane

Artemas Martin Charles Méray Gösta Mittag-Leffler Henri Padé Alessandro Padoa

Henri Poincaré Cyparissos Stephanos Irving Stringham

F. J. Vaes Giuseppe Veronese Vito Volterra

1904, Heidelberg

Jules Andrade Léon Autonne Émile Borel Anton Börsch Pierre Boutroux Anton von Braunmühl Alexander von Brill Max Brückner Moritz Cantor Alfredo Capelli

Samuel Dickstein Gustaf Eneström Henri Fehr Johannes Finsterbusch Sebastian Finsterwalder Robert Fricke Robert William Genese Paul Gordan Alfred George Greenhill

Alf Victor Guldberg August Gutzmer Jacques Hadamard David Hilbert Franc Hočevar Alfred Kempe Felix Klein Johannes Knoblauch Gyula Kőnig (Julius König) Leo Königsberger Tullio Levi-Civita

Alfred Loewy Gino Loria Francis Sowerby Macaulay Wilhelm Franz Meyer Hermann Minkowski Gösta Mittag-Leffler Emil Müller Paul Painlevé Ludwig Prandtl Karl Rohn Georg Scheffers Ludwig Schlesinger Arthur Moritz Schoenflies Heinrich Schotten Corrado Segre Maximilian Simon Arnold Sommerfeld Antonín Václav Šourek Paul Stäckel Cyparissos Stéphanos Eduard Study Heinrich Suter Paul Tannery

Giovanni Vailati Vito Volterra Georgy Voronoy Heinrich Martin Weber Julius Weingarten Hermann Wiener Ernest Julius Wilczynski Edwin Bidwell Wilson Anders Wiman Wilhelm Wirtinger Hieronymus Georg Zeuthen

1908, Rome

Max Abraham Federico Amodeo Jules Andrade Friedrich Simon Archenhold Léon Autonne Giuseppe Bagnera Emanuel Beke Felix Bernstein Luigi Bianchi Giovanni Boccardi Tommaso Boggio Georg Bohlmann Émile Borel Pierre Boutroux L. E. J. Brouwer Max Brückner George H. Bryan Silvio Canevazzi Alfredo Capelli Giuseppe Casazza :it:Alberto Conti

Gaston Darboux George Darwin Miles Menander Dawson Michele de Franchis Zoel García de Galdeano Fernando de Helguero Robert de Montessus de Ballore Leonard Eugene Dickson Friedrich Dingeldey Maurice d'Ocagne Pierre Duhem Walther von Dyck William Palin Elderton Arnold Emch Federigo Enriques Henri Fehr Thomas Claxton Fidler Johannes Finsterbusch Andrew Forsyth Giovanni Frattini Ivar Fredholm Guido Fubini Generoso Gallucci Antonio Garbasso Robert William Genese Raffaele Giacomelli Corrado Gini Paul Gordan George Greenhill August Gutzmer Jacques Hadamard Gerhard Hessenberg Gregorius Itelson Paul Koebe G. V. Kolosoff Arthur Korn Traian Lalesco Horace Lamb Giuseppe Lauricella Charles Lembourg Beppo Levi Tullio Levi-Civita Hendrik Lorentz Gino Loria Luigi Luiggi Alexander Macfarlane Lucien March Roberto Marcolongo Gösta Mittag-Leffler Domenico Montesano E. H. Moore Simon Newcomb Onorato Nicoletti Max Noether Luciano Orlando Marino Pannelli Ernesto Pascal Annibale Pastore Mihailo Petrović Georgii Pfeiffer Émile Picard Georg Pick Salvatore Pincherle Laura Pisati Giulio Pittarelli Paolo Pizzetti Henri Poincaré John Henry Poynting Giuseppe Pucciano Albert Quiquet Gusztáv Rados Georges Rémoundos Frigyes Riesz

Ludwig Schlesinger Corrado Segre Francesco Severi Carlo Severini Maximilian Simon David Eugene Smith Carlo Somigliana Arnold Sommerfeld Cyparissos Stéphanos Carl Størmer

George F. Swain Orazio Tedone Guido Toja Gheorghe Tzitzéica Giovanni Vailati Vladimir Varićak Giuseppe Veronese Vito Volterra William Henry Young Stanisław Zaremba Ernst Zermelo

Hieronymus Georg Zeuthen

1912, Cambridge (UK)

Max Abraham Luigi Amoroso Harry Bateman Hans Albrecht von Beckh-Widmanstetter Geoffrey Thomas Bennett Sergei Natanovich Bernstein Wilhelm Blaschke Otto Blumenthal Maxime Bôcher Enrico Bompiani Émile Borel Selig Brodetsky Thomas John I'Anson Bromwich L. E. J. Brouwer Ernest William Brown Max Brückner George Edward St. Lawrence Carson Henry Louis Le Châtelier

John Dougall Jules Drach Walther von Dyck Francis Ysidro Edgeworth Luther P. Eisenhart Edwin Bailey Elliott Gustaf Eneström Federigo Enriques Paul Peter Ewald Henri Fehr John Charles Fields Johannes Finsterbusch Ludwig Föppl André Gérardin Marcel Grossmann Jacques Hadamard Johann Georg Hagen Percy John Harding G. H. Hardy Nikolaos J. Hatzidakis Micaiah John Muller Hill Bohuslav Hostinský Hilda Phoebe Hudson Edward Vermilye Huntington Gregorius Itelson Zygmunt Janiszewski Philip Jourdain Theodore von Kármán Edward Kasner Helge von Koch Dénes Kőnig József Kürschák Horace Lamb Edmund Landau Joseph Larmor Robert Alfred Lehfeldt Armin Otto Leuschner John Edensor Littlewood Gino Loria Augustus Edward Hough Love Alexander Macfarlane E. H. Moore Frank Morley Forest Ray Moulton Robert Franklin Muirhead Eric Harold Neville Thomas Percy Nunn Alessandro Padoa Giuseppe Peano William Peddie Johannes Hendrikus Peek Mihailo Petrovitch Albert Quiquet Georges Rémoundos Ferdinand Rudio Carl David Tolmé Runge

Ralph Allen Sampson Ludwig Schlesinger Pieter Hendrik Schoute William Fleetwood Sheppard Ludwik Silberstein David Eugene Smith Marian Smoluchowski Carlo Somigliana Duncan Sommerville Johan Frederik Steffensen Cyparissos Stéphanos

Eduard Study

Esteban Terrades J. J. Thomson Herbert Hall Turner Gheorghe Tzitzéica Giovanni Vacca Vito Volterra Roland Weitzenböck Alfred North Whitehead E. T. Whittaker Michael Marlow Umfreville Wilkinson Ernst Zermelo

1920, Strasbourg

Johan Antony Barrau

Jean Boccardi Pierre Boutroux Louis Marcel Brillouin Henri Brocard Bohumil Bydzowsky Élie Cartan Albert Châtelet Francisco Miranda da Costa Lobo Percy John Daniell Théophile de Donder Charles Jean de la Vallée-Poussin Arnaud Denjoy Jacques Deruyts Leonard Eugene Dickson Maurice d'Ocagne Jules Drach L. Gustave du Pasquier Luther P. Eisenhart Rudolf Fueter André Gérardin Alfred George Greenhill Marcel Grossmann Édouard Guillaume Alf Victor Guldberg Jacques Hadamard Nikolaos J. Hatzidakis Bohuslav Hostinský Camille Jordan Gabriel Koenigs Joseph Larmor Solomon Lefschetz Louis Maillard Niels Erik Nørlund Kinnosuke Ogura František Rádl Georges Rémoundos Julio Rey Pastor Dimitri Riabouchinsky

Émile Schwoerer

Simion Stoilow Carl Størmer Teiji Takagi

Georges Valiron Henri Louis Vanderlinden Theodoros Varopoulos Vito Volterra Joseph Leonard Walsh Rolin Wavre Pierre Weiss Norbert Wiener William Henry Young Stanisław Zaremba

1924, Toronto

Jules Andrade Robert W. Angus R. W. Bailey Johan Antony Barrau Louis Agricola Bauer Eric Temple Bell Benjamin Abram Bernstein Abram Besicovitch Richard Birkeland Vilhelm Bjerknes Gilbert Ames Bliss Tommy Bonnesen Ettore Bortolotti Arthur Lyon Bowley Louis Charles Breguet Lyman James Briggs Léon Brillouin Ernest William Brown Daniel Buchanan Bohumil Bydzovsky Florian Cajori George Ashley Campbell John Renshaw Carson Élie Cartan Sydney Chapman Prosper Charbonnier Jean Chazy Robert H. Coats Arthur Byron Coble B. M. Coïalowitsch Ernest George Coker Arthur W. Conway Patrick Peter Cormack Francisco Miranda da Costa Lobo Louis Jacques Crelier Louise Duffield Cummings David Raymond Curtiss Haroutune Mugurditch Dadourian Boris Delaunay

Leonard Eugene Dickson Alfred Cardew Dixon Jules Drach L. Gustave du Pasquier Herbert Bristol Dwight Arthur Eddington John Arndt Eiesland William Palin Elderton Alfred Errera Griffith Conrad Evans Henri Fehr Grigorii Fichtenholz John Charles Fields Ronald Fisher Arthur Percy Morris Fleming Walter Burton Ford R. M. Foster Ralph H. Fowler Maurice Fréchet Thornton Carle Fry Guido Fubini Rudolf Fueter William Frederick Gerhardt

Albert Henry Stewart Gillson Corrado Gini Giovanni Giorgi Oliver Edmunds Glenn James Waterman Glover Lucien Godeaux James Gordon Gray Alfred George Greenhill Jules Haag Bernard Parker Haigh Mellen Woodman Haskell Olive Clio Hazlett Nicholas Hunter Heck Earle Raymond Hedrick James Blacklock Henderson Robert Henderson Einar Hille G. W. O. Howe William Jackson Humphreys F. R. W. Hunt John Irwin Hutchinson Samuel Jacob Jacobsohn Maurice Janet Charles Frewen Jenkin

Louis Charles Karpinski Arthur Edwin Kennelly Cassius Jackson Keyser Louis Vessot King Gabriel Koenigs Alfred Korzybski

Mikhail Kravchuk Nikolay Mitrofanovich Krylov Joseph Larmor Jean-Marie Le Roux Horace Clifford Levinson Cristóbal de Losada y Puga Murdoch Campbell MacLean Percy Alexander MacMahon Lucien March George Francis McEwen Émile Merlin George Abram Miller Edward C. Molina Frank Morley Francis Dominic Murnaghan Forrest Hamilton Murray Øystein Ore Charles Algernon Parsons John Patterson Giuseppe Peano Mihailo Petrovitch Lars Edvard Phragmén James P. Pierpont Salvatore Pincherle Michel Plancherel Henry Crozier Plummer Jean-Baptiste Pomey Gorakh Prasad Umberto Puppini C. V. Raman Andrea Razmadze Lowell J. Reed Gregorio Ricci-Curbastro Paul Reece Rider Henry Louis Rietz René Risser Joseph Fels Ritt William Henry Roever James Harvey Rogers Thomas Reeve Rosebrugh Charles Edward St. John Axel Frey Samsioe Pio Scatizzi Clément Servais Francesco Severi Napier Shaw William Fleetwood Sheppard James Alexander Shohat Wacław Sierpiński Ludwik Silberstein Chester Snow Carl Størmer Johan Frederik Steffensen Vladimir Steklov Charles Thompson Sullivan William Francis Gray Swann John Lighton Synge Jacob Tamarkin D'Arcy Wentworth Thompson Leonida Tonelli Jacques Touchard Gheorghe Tzitzéica J. V. Uspensky Willem van der Woude Henri Louis Vanderlinden Harry Schultz Vandiver Theodoros Varopoulos John Alexander Low Waddell James Henry Weaver A. Harry Wheeler

Albert Wurts Whitney Raymond Louis Wilder Thomas Russell Wilkins Walter Francis Willcox William Lloyd Garrison Williams Edwin Bidwell Wilson Hugh Herbert Wolfenden Julius Wolff William Henry Young George Udny Yule Stanisław Zaremba

1928, Bologna

Nicholas Wladimir Akimoff Giacomo Albanese Giuseppe Albenga Pavel Alexandrov Luigi Amoroso

Raymond Clare Archibald Emilio Artom José Babini Richard Baldus Stefan Banach Paul Jean Joseph Barbarin Nina Bary Sergei Natanovich Bernstein Ludwig Berwald Cornelis Benjamin Biezeno