First International Mathematical Olympiad

Date: July 21, 1959 • Location: Rome, Italy

The inaugural International Mathematical Olympiad, the leading mathematical competition for pre-university students, began in Romania.

The International Mathematical Olympiad (IMO) is an annual mathematical competition for pre-university students, and is the oldest of the International Science Olympiads. It is widely regarded as the most prestigious mathematical competition in the world. The first IMO was held in Romania in 1959. It has since been held annually, except in 1980. More than 100 countries participate. Each country sends a team of up to six students, plus one team leader, one deputy leader, and observers.