16 – 25 July 2023
IChO 2023
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Previous IChO's
53rd IChO JAP
Kansai Area, Japan 25 July to 2 August 2021 (remote)
52nd IChO
Istanbul, Turkey 23 to 29 July 2020 (remote)
51st IChO
Paris, France 21 to 30 July 2019
48th IChO
Tbilisi, Georgia 23 July to 1 August 2016
49th IChO
Nakhon Pathom, Thailand 6 to 15 July 2017
50th IChO
Bratislava, Slovakia and Prague, Czech Republic 19 to 29 July 2018
45th IChO
Moscow, Russia 15 to 24 July 2013
46th IChO
Hanoi, Vietnam 20 to 29 July 2014
47th IChO
Baku, Azerbaijan 20 to 29 July 2015
42nd IChO
Tokyo, Japan 19 to 28 July 2010
43rd IChO
Ankara, Turkey 9 to 18 July 2011
44th IChO
Washington DC, United States 21 to 30 July 2012