List of International Mathematical Olympiad participants
The International Mathematical Olympiad is an annual international high school mathematics competition focused primarily on pre-collegiate mathematics, and is the oldest of the international science olympiads. The awards for exceptional performance include medals for roughly the top half participants, and honorable mentions for participants who solve at least one problem perfectly.
This is a list of participants who have achieved notability. This includes participants that went on to become notable mathematicians, participants who won medals at an exceptionally young age, or participants who scored highly.
Exceptionally young participants
;Bronze medal- Terence Tao, in 1986 at age
- Raúl Chávez Sarmiento, in 2009 at age
- Akshay Venkatesh, in 1994 at age
- Terence Tao, in 1987 at age
- Raúl Chávez Sarmiento, in 2010 at age
- Lee Su-hong, in 2007 at age 13 years, 10 months
- Terence Tao, in 1988 at age
- Raúl Chávez Sarmiento, in 2011 at age
- Ömer Cerrahoğlu, in 2009 at age
- Pawel Kröger, in 1972 at age
- Noam Elkies, in 1981 at age
- Sergei Konyagin, in 1972 at age
- Vladimir Drinfeld, in 1969 at age
High-scoring participants
Notable participants
A number of IMO participants have gone on to become notable mathematicians. The following IMO participants have either received a Fields Medal, a Wolf Prize or a Clay Research Award, awards which recognise groundbreaking research in mathematics; a European Mathematical Society Prize, an award which recognizes young researchers; or one of the American Mathematical Society's awards recognizing research in specific mathematical fields. Grigori Perelman proved the Poincaré conjecture, and Yuri Matiyasevich gave a negative solution of Hilbert's tenth problem.G denotes an IMO gold medal, S denotes a silver medal, B denotes a bronze medal, and P denotes a perfect score.
| Name | Team | IMO | Fields Medal | Wolf Prize | EMS Prize | AMS research prizes | Clay Award |
| Grigory Margulis |  Soviet Union | ||||||
| George Lusztig |  Romania | 1985 | |||||
| Henryk Iwaniec |  Poland | 2002 | |||||
| László Lovász |  Hungary | ||||||
| Andrei Suslin | Soviet Union | 2000 | |||||
| János Pintz | Hungary | 2014 | |||||
| Vladimir Drinfeld | Soviet Union | ||||||
| Alexander Merkurjev | Soviet Union | 2012 | |||||
| Pierre-Louis Lions |  France | ||||||
| János Kollár | Hungary | 2006 | |||||
| Jean-Christophe Yoccoz | France | ||||||
| Paul Vojta |  United States | 1992 | |||||
| Alexander Goncharov | Soviet Union | ||||||
| Richard Borcherds |  United Kingdom | ||||||
| Timothy Gowers | United Kingdom | ||||||
| Peter Kronheimer | United Kingdom | 2007 | |||||
| Gábor Tardos | Hungary | ||||||
| Grigori Perelman | Soviet Union | ||||||
| Alexis Bonnet | France | ||||||
| Laurent Lafforgue | France | ||||||
| Daniel Tătaru | Romania | 2002 | |||||
| Zoltán Szabó | Hungary | 2007 | |||||
| Jeremy Kahn |  United States | ||||||
| Ricardo Pérez-Marco |  Spain | ||||||
| Dominic Joyce | United Kingdom | ||||||
| Stanislav Smirnov | Soviet Union | ||||||
| Terence Tao |  Australia | 2002 | |||||
| Elon Lindenstrauss |  Israel | 2001 | |||||
| Ngô Bảo Châu |  Vietnam | ||||||
| Emmanuel Grenier | France | ||||||
| Vincent Lafforgue | France | ||||||
| Eugenia Malinnikova | Soviet Union | ||||||
| Akshay Venkatesh | Australia | ||||||
| Artur Avila |  Brazil | ||||||
| Emmanuel Breuillard | France | ||||||
| Ben J. Green | United Kingdom | ||||||
| Maryam Mirzakhani |  Iran | 2009 | |||||
| Bo'az Klartag | Israel | ||||||
| Ciprian Manolescu | Romania | ||||||
| Adrian Ioana | Romania | ||||||
| Mark Braverman | |||||||
| Peter Scholze |  Germany | 2015 |
IMO medalists have also gone on to become notable computer scientists. The following IMO medalists have received a Nevanlinna Prize, a Knuth Prize, or a Gödel Prize; these awards recognise research in theoretical computer science. G denotes an IMO gold medal, S denotes a silver medal, B denotes a bronze medal, and P denotes a perfect paper.
| Name | Team | IMO | Nevanlinna Prize | Knuth Prize | Gödel Prize |
| László Lovász | Hungary | ||||
| László Babai | Hungary | ||||
| Johan Håstad |  Sweden | ||||
| Peter Shor | United States | ||||
| Alexander Razborov | Soviet Union | ||||
| Subhash Khot |  India |