Fields Medal Winners Inception to 2002:

1936 

Lars Valerian Ahlfors (Harvard University)
Jesse Douglas (Massachusetts Institute of Technology)

1950

Laurent Schwartz (Université de Nancy)
Atle Selberg (IAS, Princeton)

1954

Kunihiko Kodaira (Princeton University)
Jean-Pierre Serre (Université de Paris)

1958

Klaus Friedrich Roth (University of London)
René Thom (Université de Strasbourg, IHÉS since 1964)

1962

Lars V. Hormander (University of Stockholm)
John Willard Milnor (Princeton University)

1966

Michael Francis Atiyah (Oxford University) Paul Joseph Cohen (Stanford University) Alexander Gröthendieck (IHÉS)
Stephen Smale (University of California, Berkeley)

1970

Alan Baker (Cambridge University) Heisuke Hironaka (Harvard University) Serge P. Novikov (Moscow University)  (perhaps)
John Griggs Thompson (Cambridge University)

1974

Enrico Bombieri (University of Pisa)
David Bryant Mumford (Harvard University)

1978

Pierre René Deligne (IHÉS) Charles Louis Fefferman (Princeton University) Gregori Alexandrovitch Margulis (Moscow University)
Daniel G. Quillen (Massachusetts Institute of Technology)

1982 

Alain Connes (Collège de France and IHÉS) (perhaps)
Shing-Tung Yau (IAS, Princeton)

1986

Simon Donaldson (Oxford University)
Gerd Faltings (Princeton University)
Michael Freedman (University of Califomia, San Diego)

1990

Vladimir Drinfeld (Physics Institute Kharkov) Vaughan Jones (University of California, Berkeley) Shigefumi Mori (University of Kyoto) Edward Witten (LAS, Princeton)

1994

Pierre-Louis Lions (Université de Paris-Dauphine)
Jean-Christophe Yoccoz (Université de Paris-Sud)
Jean Bourgain (IHÉS and IAS, Princeton) (perhaps)
Efim Zelmanov (University of Wisconsin)

1998

Richard E. Borcherds (Cambridge University) W. Timothy Gowers (Cambridge University) Maxim Kontsevich (IHÉS) (perhaps)
Curtis T. McMullen (Harvard University)

2002

Laurent Lafforgue (IHÉS) Vladimir Voevodsky (IAS, Princeton)