历届IMO（国际数学奥林匹克）试题提供国
1959/1 proposed by Poland 波兰
1959/2 proposed by Romania 罗马尼亚
1959/3 proposed by Hungary 匈牙利
1959/4 proposed by Hungary 匈牙利
1959/5 proposed by Romania 罗马尼亚
1959/6 proposed by Czechoslovakia 捷克斯洛伐克
1960/1 proposed by Bulgaria 保加利亚
1960/2 proposed by Hungary 匈牙利
1960/3 proposed by Romania 罗马尼亚
1960/4 proposed by Hungary 匈牙利
1960/5 proposed by Czechoslovakia 捷克斯洛伐克
1960/6 proposed by Bulgaria 保加利亚
1960/7 proposed by Eastern Germany 民主德国
1961/1 proposed by Hungary 匈牙利
1961/2 proposed by Poland 波兰
1961/3 proposed by Bulgaria 保加利亚
1961/4 proposed by Eastern Germany 民主德国
1961/5 proposed by Czechoslovakia 捷克斯洛伐克
1961/6 proposed by Romania 罗马尼亚
1962/1 proposed by Poland 波兰
1962/2 proposed by Hungary 匈牙利
1962/3 proposed by Czechoslovakia 捷克斯洛伐克
1962/4 proposed by Romania 罗马尼亚
1962/5 proposed by Bulgaria 保加利亚
1962/6 proposed by Eastern Germany 民主德国
1962/7 proposed by USSR 苏联
1963/1 proposed by Czechoslovakia 捷克斯洛伐克
1963/2 proposed by USSR 苏联
1963/3 proposed by Hungary 匈牙利
1963/4 proposed by USSR 苏联
1963/5 proposed by Eastern Germany 民主德国
1963/6 proposed by Hungary 匈牙利
1964/1 proposed by Czechoslovakia 捷克斯洛伐克
1964/2 proposed by Hungary 匈牙利
1964/3 proposed by Yugoslavia 南斯拉夫
1964/4 proposed by Hungary 匈牙利
1964/5 proposed by Romania 罗马尼亚
1964/6 proposed by Poland 波兰
1965/1 proposed by Yugoslavia 南斯拉夫
1965/2 proposed by Poland 波兰
1965/3 proposed by Czechoslovakia 捷克斯洛伐克
1965/4 proposed by USSR 苏联
1965/5 proposed by Romania 罗马尼亚
1965/6 proposed by Poland 波兰
1966/1 proposed by USSR 苏联
1966/2 proposed by Hungary 匈牙利
1966/3 proposed by Bulgaria 保加利亚
1966/4 proposed by Yugoslavia 南斯拉夫
1966/5 proposed by Czechoslovakia 捷克斯洛伐克
1966/6 proposed by Poland 波兰
1967/1 proposed by Poland 波兰
1967/2 proposed by Czechoslovakia 捷克斯洛伐克
1967/3 proposed by United Kingdom 英国
1967/4 proposed by Italy 意大利
1967/5 proposed by USSR 苏联
1967/6 proposed by Hungary 匈牙利
1968/1 proposed by Romania 罗马尼亚
1968/2 proposed by Czechoslovakia 捷克斯洛伐克
1968/3 proposed by Bulgaria 保加利亚
1968/4 proposed by Poland 波兰
1968/5 proposed by Eastern Germany 民主德国
1968/6 proposed by United Kingdom 英国
1969/1 proposed by Eastern Germany 民主德国
1969/2 proposed by Hungary 匈牙利
1969/3 proposed by Poland 波兰
1969/4 proposed by Netherlands 荷兰
1969/5 proposed by Mongolia 蒙古
1969/6 proposed by USSR 苏联
1970/1 proposed by Poland 波兰
1970/2 proposed by Romania 罗马尼亚
1970/3 proposed by Sweden 瑞典
1970/4 proposed by Czechoslovakia 捷克斯洛伐克
1970/5 proposed by Bulgaria 保加利亚
1970/6 proposed by USSR 苏联
1971/1 proposed by Hungary 匈牙利
1971/2 proposed by USSR 苏联
1971/3 proposed by Poland 波兰
1971/4 proposed by Netherlands荷兰
1971/5 proposed by Bulgaria 保加利亚
1971/6 proposed by Sweden 瑞典
1972/1 proposed by USSR 苏联
1972/2 proposed by Netherlands 荷兰
1972/3 proposed by United Kingdom 英国
1972/4 proposed by Netherlands 荷兰
1972/5 proposed by Bulgaria 保加利亚
1972/6 proposed by United Kingdom 英国
1973/1 proposed by Czechoslovakia 捷克斯洛伐克
1973/2 proposed by Poland 波兰
1973/3 proposed by Sweden 瑞典
1973/4 proposed by Yugoslavia 南斯拉夫
1973/5 proposed by Poland 波兰
1973/6 proposed by Sweden 瑞典
1974/1 proposed by USA 美国
1974/2 proposed by Finland 芬兰
1974/3 proposed by Romania 罗马尼亚
1974/4 proposed by Bulgaria 保加利亚
1974/5 proposed by Netherlands 荷兰
1974/6 proposed by Sweden 瑞典
1975/1 proposed by Czechoslovakia 捷克斯洛伐克
1975/2 proposed by United Kingdom 英国
1975/3 proposed by Netherlands 荷兰
1975/4 proposed by USSR 苏联
1975/5 proposed by USSR 苏联
1975/6 proposed by United Kingdom 英国
1976/1 proposed by Czechoslovakia 捷克斯洛伐克
1976/2 proposed by Finland 芬兰
1976/3 proposed by Netherlands 荷兰
1976/4 proposed by USA 美国
1976/5 proposed by Netherlands 荷兰
1976/6 proposed by United Kingdom 英国
1977/1 proposed by Netherlands 荷兰
1977/2 proposed by Phan ??c Chính, Vietnam 越南
1977/3 proposed by Netherlands 荷兰
1977/4 proposed by United Kingdom 英国
1977/5 proposed by Eastern Germany 民主德国
1977/6 proposed by Bulgaria 保加利亚
1978/1 proposed by Cuba 古巴
1978/2 proposed by USA 美国
1978/3 proposed by United Kingdom 英国
1978/4 proposed by USA 美国
1978/5 proposed by France 芬兰
1978/6 proposed by Netherlands 荷兰
1979/1 proposed by Western Germany 民主德国
1979/2 proposed by Bulgaria 保加利亚
1979/3 proposed by USSR 苏联
1979/4 proposed by USA 美国
1979/5 proposed by Israel 以色列
1979/6 proposed by Eastern Germany 民主德国
1981/1 proposed by United Kingdom 英国
1981/2 proposed by Western Germany 民主德国
1981/3 proposed by Netherlands 荷兰
1981/4 proposed by Belgium 比利时
1981/5 proposed by USSR 苏联
1981/6 proposed by Finland 芬兰
1982/1 proposed by United Kingdom 英国
1982/2 proposed by Netherlands 荷兰
1982/3 proposed by A.Grishkov, USSR 苏联
1982/4 proposed by United Kingdom 英国
1982/5 proposed by Netherlands 荷兰
1982/6 proposed by V?n Nh? C??ng, Vietnam 越南
1983/1 proposed by United Kingdom 英国
1983/2 proposed by I.F.Sharygin, USSR 苏联
1983/3 proposed by Western Germany 民主德国
1983/4 proposed by Belgium 比利时
1983/5 proposed by Poland 波兰
1983/6 proposed by USA 美国
1984/1 proposed by Western Germany 民主德国
1984/2 proposed by Netherlands 荷兰
1984/3 proposed by Romania 罗马尼亚
1984/4 proposed by Romania 罗马尼亚
1984/5 proposed by Mongolia 蒙古
1984/6 proposed by Poland 波兰
1985/1 proposed by United Kingdom 英国
1985/2 proposed by Australia 澳大利亚
1985/3 proposed by Netherlands 荷兰
1985/4 proposed by Mongolia 蒙古
1985/5 proposed by USSR 苏联
1985/6 proposed by Sweden 瑞典
1986/1 proposed by Western Germany 联邦德国
1986/2 proposed by Gengzhe Chang and Dongxu Qi, China 中国常庚哲齐东旭
1986/3 proposed by Elias Wegert, Eastern Germany 民主德国
1986/4 proposed by Iceland 冰岛
1986/5 proposed by United Kingdom 英国
1986/6 proposed by Konrad Engel, Eastern Germany 民主德国 恩格尔
1987/1 proposed by Western Germany 民主德国
1987/2 proposed by I.A.Kushnir, USSR 苏联
1987/3 proposed by Western Germany 联邦德国
1987/4 proposed by Nguy?n Minh ??c, Vietnam 越南
1987/5 proposed by Eastern Germany 民主德国
1987/6 proposed by V.F.Lev, USSR 苏联
1988/1 proposed by Lucien Kieffer, Luxembourg 卢森堡
1988/2 proposed by Czechoslovakia 捷克斯洛伐克
1988/3 proposed by United Kingdom 英国
1988/4 proposed by Ireland 爱尔兰
1988/5 proposed by Dimitris Kontogiannis, Greece 希腊
1988/6 proposed by Western Germany 联邦德国
1989/1 proposed by Philippines 菲律宾
1989/2 proposed by Australia 澳大利亚
1989/3 proposed by Hendrikus Gerardus Derksen, Netherlands 荷兰
1989/4 proposed by Iceland
1989/5 proposed by Sweden
1989/6 proposed by Professor Marcin Kuczma, university of Warsaw, Poland 波兰
1990/1 proposed by India 印度
1990/2 proposed by Czechoslovakia 捷克斯洛伐克
1990/3 proposed by Laurentin Panaitopol, university of Bucharest Romania 罗马尼亚
1990/4 proposed by Turkey 土耳其
1990/5 proposed by Germany 德国
1990/6 proposed by Hendrikus Gerardus Derksen, Netherlands 荷兰
1991/1 proposed by USSR 苏联
1991/2 proposed by Romania 罗马尼亚
1991/3 proposed by Chengzhang Li, China 中国 李成章
1991/4 proposed by USA
1991/5 proposed by Johan Yebbou, France
1991/6 proposed by Hendrikus Gerardus Derksen, Netherlands
1992/1 proposed by New Zealand 新西兰
1992/2 proposed by India 印度
1992/3 proposed by Chengzhang Li, China 中国 李成章
1992/4 proposed by Johan Yebbou, France 法国
1992/5 proposed by Italy 意大利
1992/6 proposed by Tony Gardiner, United Kingdom 英国
1993/1 proposed by Ireland 爱尔兰
1993/2 proposed by David Monk, formerly University of Edinburgh, United Kingdom 英国
1993/3 proposed by Finland 芬兰
1993/4 proposed by F.Y.R. Macedonia 马萨多尼亚
1993/5 proposed by Elias Wegert, Germany 德国
1993/6 proposed by N.G. de Bruijn, Netherlands 荷兰
1994/1 proposed by Vincent Lafforgue, France 法国
1994/2 proposed by Hans Lausch, Monash University, Australia and Armenia independently 亚美尼亚－澳大利亚
1994/3 proposed by Romania 罗马尼亚
1994/4 proposed by Australia 澳大利亚
1994/5 proposed by United Kingdom 英国
1994/6 proposed by Finland 芬兰
1995/1 proposed by Bulgaria 保加利亚
1995/2 proposed by Nazar Agakhanov, Russia 俄罗斯
1995/3 proposed by Jaromir Simsa, Czech Republic（我在其他地方得到的信息是这题为日本提供）
1995/4 proposed by Professor Marcin Kuczma, university of Warsaw, Poland 波兰
1995/5 proposed by New Zealand 新西兰
1995/6 proposed by Professor Marcin Kuczma, university of Warsaw, Poland 波兰
1996/1 proposed by Finland 芬兰
1996/2 proposed by Canada 加拿大
1996/3 proposed by Romania 罗马尼亚
1996/4 proposed by Alexander S. Golovanov, Russia 俄罗斯
1996/5 proposed by Nairi M. Sedrakyan, Armenia 亚美尼亚
1996/6 proposed by Laurent Rosaz, France 法国
1997/1 proposed by Belarus 白俄罗斯
1997/2 proposed by David Monk, formerly University of Edinburgh, United Kingdom 英国
1997/3 proposed by Russia 俄罗斯
1997/4 proposed by Iran 伊朗
1997/5 proposed by Petr Kanovsky, Czech Republic 捷克斯洛伐克
1997/6 proposed by Giedrius Alkauskas, Lithuania 立陶宛
1998/1 proposed by Charles Leytem, high school Dierkirch, Luxembourg 卢森堡
1998/2 proposed by India 印度
1998/3 proposed by Belarus 白俄罗斯
1998/4 proposed by David Monk university Edinbourg 英国
1998/5 proposed by Ukraine 乌克兰
1998/6 proposed by Nikolai Nikolov and Oleg Mushkarov Institut Mathematiques Informatiques Academie des Sciences Sofia Bulgarie 保加利亚
1999/1 proposed by Jan Willemson university of Tartu, Estonia 爱沙尼亚
1999/2 proposed by Professor Marcin Kuczma, university of Warsaw, Poland 波兰
1999/3 proposed by E.Barabanov and I.Voronovich, Belarus 白俄罗斯
1999/4 proposed by Taiwan 中国台湾
1999/5 proposed by P.Kozhevnikov, Russia 俄罗斯
1999/6 proposed by Japan 日本
2000/1 proposed by Serge Berlov, Saint-Petersbourg Russia 俄罗斯
2000/2 proposed by Titu Andreescu, USA 美国
2000/3 proposed by Belarus 白俄罗斯
2000/4 proposed by Sandor Dobos professor lyc Fazekas Mihaly, Budapest, Hungary 匈牙利
2000/5 proposed by Valerii Senderov, Moscou Russia 俄罗斯
2000/6 proposed by Lev and Tatiana Emelianovii, Kaluga Russia 俄罗斯
2001/1 proposed by Hojoo Lee university Kwangwoon, Seoul Korea 韩国
2001/2 proposed by Hojoo Lee university Kwangwoon, Seoul Korea 韩国
2001/3 proposed by Dr.Christian Bey university of Rostock, Germany 德国
2001/4 proposed by Professor Bill Sands university of Calgary, Canada 加拿大
2001/5 proposed by Toshio Seimiya, Kawasaki Japan / see cruxmathematicorum problem 2501 （以色列）
2001/6 proposed by Alexander Ivanov, Bulgaria 保加利亚
2002/1 proposed by Federico Ardila, university of Los Andes, Bogota Colombia 哥伦比亚
2002/2 proposed by Hojoo Lee university Kwangwoon, Seoul Korea 韩国
2002/3 proposed by Laurentin Panaitopol, university of Bucharest Romania 罗马尼亚
2002/4 proposed by Mihai Manea, Galati Romania 罗马尼亚
2002/5 proposed by B.J.Venkatachala, professor university of Indian Institut of Sciences, Bangalore India 印度
2002/6 proposed by Vyacheslav Yasinskiy, Vinnitsa Pedagogical University, Vinnitsa Ukraine 乌克兰
2003/1 proposed by Carlos Gustavo Moreira, Brasilia 巴西
2003/2 proposed by Bulgaria 保加利亚
2003/3 proposed by Waldemar Pompe, Poland 波兰
2003/4 proposed by Finland 芬兰
2003/5 proposed by Ireland 爱尔兰
2003/6 proposed by Johan Yebbou Professeur Mathematiques Speciales MP* in France 法国
2004/1 proposed by Valentin Vornicu and Dinu Serbanescu, Romania 罗马尼亚
2004/2 proposed by Hojoo Lee university Kwangwoon, Seoul Korea 韩国
2004/3 proposed by Jan Villemson, Estonia 爱沙尼亚
2004/4 proposed by Hojoo Lee university Kwangwoon, Seoul Korea 韩国
2004/5 proposed by Waldemar Pompe, Poland 波兰
2004/6 proposed by Dr. Mohsen Jamaly, Iran 伊朗
2005/1 proposed by Bogdan Enescu, Romania 罗马尼亚
2005/2 proposed by N.G. de Bruijn, Netherlands 荷兰
2005/3 proposed by Hojoo Lee, South Korea 韩国
2005/4 proposed by Mariusz Skalba, Poland 波兰
2005/5 proposed by Waldemar Pompe, Poland 波兰
2005/6 proposed by Radu Gologan and Dan Schwarz, Romania 罗马尼亚
2006/1 proposed by Hojoo Lee, South Korea 韩国
2006/2 proposed by Du?an Djuki?, Serbia 塞尔维亚－黑山
2006/3 proposed by Finbarr Holland, Ireland 爱尔兰
2006/4 proposed by Zuming Feng, USA 美国 冯祖铭
2006/5 proposed by Dan Schwarz, Romania 罗马尼亚
2006/6 proposed by Du?an Djuki?, Serbia 塞尔维亚－黑山
2007年第48届国际数学奥林匹克IMO试题由以下国家提供
第1题：新西兰；
第2题：卢森堡；
第3题：俄罗斯
第5题：英国；
第6题：荷兰
2008年第49届国际数学奥林匹克IMO试题由以下国家提供
第1题由俄罗斯的Andrey Gavrilyuk提供。
第2题由奥地利的Walther Janous提供。
第3题由立陶宛的Kęstutis Česnavičius提供。
第4题由韩国的Hojoo Lee提供,他已为IMO供题多道，经常上mathoe的就都知道此人了。
第5题由法国的Bruno Le Floch and Ilia Smilga共同提供。
第6题由俄罗斯的Vladimir Shmarov提供
我国向IMO提供的题目
1986第27届IMO第2题，这是我国向IMO提供的第一道试题。
在平面上给定的点P0和△A1A2A3，且约定S≥4时，As＝A s-3，构造点列P0，P1，P2，……，使得P k+1为点Pk绕中心A k+1顺时针旋转120°所到达的位置，k＝0，1，2，……。求证：如果P1986＝P0，则△A1A2A3为等边三角形。
由中国科技大学常庚哲和吉林大学齐东旭共同命制。
1991第32届IMO第3题，这是我国向IMO提供的第二道试题。
设S＝｛1，2，3，……，280｝，求最小的自然数n，使得S的每个n元子集中都含有5个两两互素的数。
由南开大学李成章命制。
1992第33届IMO第3题，这是我国向IMO提供的第三道试题。
给定空间中的九个点，其中任何四点都不共面，在每一对点之间都连有一条线段，这条线段可染为红色或蓝色，也可不染色。试求出最小的n值，使得将其中任意n条线段中的每一条任意地染为红蓝二色之一时，在这n条线段的集合中都必然包含有一个各边同色的三角形。
由南开大学李成章命制。
1999年第40届IMO第四题由我国台湾提供。
确定所有的正整数对(n,p)，满足：p是一个素数，n≤2p，且(p-1)n＋1能够被n p-1整除。