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IOI 2018, Japan

The latest Olympiad took place in Japan in 2018. You can visit the event website to find out more, or scroll down to read about the IOI organization.



Second call for projects
 Dear all, following the discussions at our last GA meeting and the decisions of IC, IC is opening this years call for projects, for which up to...

IOI Conference
 The 12th volume of the journal "Olympiads in Informatics" has been published, and it includes several research papers and reports.

Invitations to IOI 2018
 Dear colleagues, JTB Communication Design Inc. (JCD) will be sending out Invitation letters for IOI 2018 JAPAN, which will be held in Tsukuba,...

Call for projects
 Dear all, following the discussions at our last GA meeting and the decisions of IC, IC is opening the first call for projects, for which up to 8000...

IOI 2018 - Call for Tasks
 The organizing committee of IOI 2018 invites you to submit tasks for IOI 2018. All people who will not participate as a contestant in IOI 2018 are...


IOI 2017 finished successfully
 Iran was the host country for IOI 2017. You can get a lot more information on the event's website.

The latest Olympiad was held in Japan
 IOI 2018 took place in Japan in September of 2018. The official website has the latest news.

Azerbaijan will host IOI 2019
 The International Olympiad in Informatics in 2019 will be held from August 4 to August 11 in Azerbaijan.

International Olympiad in Informatics 2020
 Singapore will host IOI 2020. Partial information about the event can be found online.

Need more info?


Not sure where to go? Click here to view some basic information on how to learn programming and prepare to win a medal at the IOI.


A couple of volunteers maintain a separate page with stats about people who participated at the International Olympiad in Informatics.


The IOI publishes a journal every year, with original high-quality scientific papers related to education, contests and algorithms.

History of the IOI

Several International Olympiads in Informatics have been organized so far, hosted by a number of different countries.

  • IOI 1989, Bulgaria

  • IOI 1990, Soviet Union

  • IOI 1991, Greece

  • IOI 1992, Germany

  • IOI 1993, Argentina

  • IOI 1994, Sweden

  • IOI 1995, Netherlands

  • IOI 1996, Hungary

  • IOI 1997, South Africa

  • IOI 1998, Portugal

  • IOI 1999, Turkey

  • IOI 2000, China

  • IOI 2001, Finland

  • IOI 2002, Korea

  • IOI 2003, USA

  • IOI 2004, Greece

  • IOI 2005, Poland

  • IOI 2006, Mexico

  • IOI 2007, Croatia

  • IOI 2008, Egypt

  • IOI 2009, Bulgaria

  • IOI 2010, Canada

  • IOI 2011, Thailand

  • IOI 2012, Italy

  • IOI 2013, Australia

  • IOI 2014, Taiwan

  • IOI 2015, Kazakhstan

  • IOI 2016, Russia

  • IOI 2017, Iran

  • IOI 2018, Japan


The International Olympiad in Informatics is organized according to the IOI Regulations, and the decision made by the General Assembly.
On this site, you can find all regulations, minutes, and people involved with the organization.