The International Biology Olympiad

Here you will find interesting information about the past IBO's and how to participate in future IBO's.

Date & Schedule

The world's largest biology competition for secondary school students takes place every year in a different country. The competition always takes place in July and lasts one week. The exact dates and locations of future competitions can be found here.


In order to participate in the IBO, you will need to win your National Biology Olympiad (NBO) competition and be selected to represent your country or region internationally. Read on to learn more about the details of this process.

Past IBOs

The fist IBO competition was held in 1990 in former Czechoslovakia. The countries that have been hosting IBO since then can be found here.

Future IBOs

The IBO competition is an event that has to be planned years in advance. The list of future host countries is here.