Ayubowan! (May you live long!)

International Astronomy Olympiad (IAO) is an international, annual academic event which includes an intellectual competition among students between the ages of 14 and 18 years. The intention of the competition is to develop imagination, creativity and independent thinking. IAO provides students with the opportunity to meet people with similar interest from across the globe.

We, Sri Lankans, are very honored that we had the opportunity to host the XXIII IAO. Contestants,  leaders, observers, and visitors from all over the world are warmly welcome to our beautiful island Sri Lanka, the Pearl of the Indian ocean. We hope that you will enjoy the event.









06 - 14 October 2018

Colombo, Sri Lanka


Dates to Remember

  • Preliminary registration deadline – 30th of June 2018
  • Regular registration deadline – 19th of July 2018
  • Late registration deadline – 16th of August 2018
  • Very late registration – As you arrive

The Accommodation Fees for the XXIII IAO

  • Regular fees (application adopted until the regular deadline – July 19):
    • Team fee: 375.– Euro/team
    • Observers: 850.– Euro/person
  • Late application (application adopted before the “late registration" deadline – August 16):
    • Team fee: 435.– Euro/team
    • Observers: 970.– Euro/person
  • Very late application (application adopted on August 17 and later):
    • Team fee: 495.– Euro/team
    • Observers: 1090.– Euro/person

Organizing parties

Ministry of Science, Technology and Research

Sri Lanka Association for Advancement of Science

Institute of Physics, Sri Lanka

University of Colombo

Arthur C Clarke Institute for Modern Technologies

Sri Lanka Planetarium