The 44th IMO (International Mathematical Olympiad) was hosted by Japan in Tokyo during July 7- 20. The Contest had participants of 457 students from 82 countries + 2 countries with observer participants only. The Olympiad was successfully closed on July 19. Results of the contest are posted below. Also please take a look at the "Results", "Problems and Solutions" and "Photo Gallery" located below. Once again congratulations to those who have participated IMO 2003 Japan. Team Leaders arrived on Monday July 7 and spend three to four days setting up the examinations and translating papers into more than 40 languages used by IMO teams. The Contestants and Deputy Leaders arrived on Friday 11. The IMO Opening Ceremony took place on Saturday July 12 in Tokyo. The two four-and-a-half hour examinations took place on July 13 Sunday & 14 Monday, and after this, the Leaders and Deputy Leaders marked and coordinated the examination papers while the Contestants participated in a program of excursions and cultural events. The closing ceremony was on Friday July 18 at the Shibuya Public Hall. His Highness, the Crown Prince was present and Gold,Silver, and Bronze medals were presented to the highest achievers, by the minister of Education,Culture,Sports,Science and Technology and many other sponsors. Following the closing ceremony, the IMO participants and guests were invited to Final Banquet at the Keio Plaza hotel. On July 19, was the day of departure of all participants.