First International Mathematical Olympiad, 1959
Second International Mathematical Olympiad, 1960
Third International Mathematical Olympiad, 1961
Fourth International Mathematical Olympiad, 1962
Fifth International Mathematical Olympiad, 1963
Sixth International Mathematical Olympiad, 1964
Seventh International Mathematical Olympiad, 1965
Eighth International Mathematical Olympiad, 1966
Ninth International Mathematical Olympiad, 1967
Tenth International Mathematical Olympiad, 1968
Eleventh International Mathematical Olympiad, 1969
Twelfth International Mathematical Olympiad, 1970
Thirteenth International Mathematical Olympiad, 1971
Fourteenth International Mathematical Olympiad, 1972
Fifteenth International Mathematical Olympiad, 1973
Sixteenth International Mathematical Olympiad, 1974
Seventeenth International Mathematical Olympiad, 1975
Eighteenth International Mathematical Olympiad, 1976
Nineteenth International Mathematical Olympiad, 1977
Twentieth International Mathematical Olympiad, 1978
Twenty-first International Mathematical Olympiad, 1979
Twenty-second International Mathematical Olympiad, 1981
Twenty-third International Mathematical Olympiad, 1982
Twenty-fourth International Mathematical Olympiad, 1983
Twenty-fifth International Mathematical Olympiad, 1984
Twenty-sixth International Mathematical Olympiad, 1985
27th International Mathematical Olympiad, Warsaw, Poland,July 9, 1986
28th International Mathematical Olympiad, Havana, Cuba, July 10, 1987
29th International Mathematical Olympiad, Canberra, Australia
30th International Mathematical Olympiad, Braunschweig, Germany
31st International Mathematical Olympiad, Beijing, China, July 12, 1990
32nd International Mathematical Olympiad, July 17, 1991
33rd International Mathematical Olympiad, Moscow, July 15, 1992
34th International Mathematical Olympiad, July 18, 1993
35th International Mathematical Olympiad, Hong Kong, July 13-14, 1994
36th International Mathematical Olympiad, Toronto, July 19, 1995
37th International Mathematical Olympiad, Mumbai, India, July 10, 1996
38th International Mathematical Olympiad, Mar del Plata, Argentina, July 24, 1997
39th International Mathematical Olympiad, Taipei, Taiwan, July 15, 1998
40th International Mathematical Olympiad, Bucharest, July 16, 1999
41st International Mathematical Olympiad, 2000
42nd International Mathematical Olympiad, Washington, DC, United States of America, July 8–9, 2001
43rd International Mathematical Olympiad, 2002
44th International Mathematical Olympiad, 2003
45th International Mathematical Olympiad, 2004
46th International Mathematical Olympiad, 2005