Unofficial list of IOI 2021 participants
The list is updated daily (with ratings). If you want to report mistakes or add new participants — you can find all the details in this post.
| Name | Team | Previous participations | ||||
|---|---|---|---|---|---|---|
| Aleksandr Abelyan |  Armenia |  IOI 2020 | ||||
| Ani Khachatryan | Armenia | |||||
| Arayi Khalatyan | Armenia | IOI 2020 | ||||
| Emil Kostanyan | Armenia |  IOI 2020 | ||||
| Amin Jalilov |  Azerbaijan | IOI 2019 | ||||
| Aziz Huseynov | Azerbaijan | IOI 2020IOI 2019 | ||||
| Said Nasibov | Azerbaijan | |||||
| Arman Ferdous |  Bangladesh | IOI 2020 IOI 2019 | ||||
| Farhan Ahmad | Bangladesh | |||||
| Mamnoon Siam | Bangladesh | IOI 2020IOI 2019IOI 2018 | ||||
| Md Nafis Ul Haque Shifat | Bangladesh | |||||
| Petar Vitorac |  Belgium | IOI 2020 | ||||
| Zhiyi Luo | Belgium | IOI 2020IOI 2019 | ||||
| Andon Todorov |  Bulgaria | IOI 2020 | ||||
| Martin Kopchev | Bulgaria | IOI 2020 IOI 2019 IOI 2018 | ||||
| Rumen Mihov | Bulgaria | |||||
| Viktor Kozhuharov | Bulgaria | IOI 2019 | ||||
| Daner Zein Tonconi Mendoza |  Bolivia, Plurinational State of | IOI 2020IOI 2019 | ||||
| Gilberto Gosset Gonzales | Bolivia, Plurinational State of | |||||
| Marco Andrés Cusicanqui León | Bolivia, Plurinational State of | |||||
| Mateo Valdivia | Bolivia, Plurinational State of | IOI 2020 | ||||
| Carolina Moura Valle |  Brazil | IOI 2020 | ||||
| Pedro Shinzato Chen | Brazil | |||||
| Yan Silva | Brazil | IOI 2020 | ||||
| Andrei Kastsiany |  Belarus | |||||
| Dzianis Lahunou | Belarus | |||||
| Ilya Kuchynski | Belarus | |||||
| Stanislau Damasevich | Belarus | |||||
| Allen Pei |  Canada | |||||
| Chris Trevisan | Canada | IOI 2020 | ||||
| Thomas Guo | Canada |  IOI 2020 | ||||
| Zixiang Zhou | Canada | IOI 2020 IOI 2019 IOI 2018 | ||||
| Ema Skottova |  Switzerland | |||||
| Joël Huber | Switzerland | IOI 2020 IOI 2019 | ||||
| Mingyang Deng |  China | |||||
| Álvaro Bacca |  Colombia | IOI 2020IOI 2019 | ||||
| Alain David Escarrá García |  Cuba | |||||
| Alberto Leyva Guerra | Cuba | IOI 2020 | ||||
| Carlos Rolando Morell Rodríguez | Cuba | |||||
| Manuel Darío Oliver Ballesteros | Cuba | IOI 2020 | ||||
| Ahmad Said |  Egypt | |||||
| Hazem Issa | Egypt | IOI 2020IOI 2019 | ||||
| Mohamed Bakry | Egypt | IOI 2020 | ||||
| Osama Alkhodairy | Egypt | IOI 2020IOI 2019 | ||||
| Erekle Roinishvili |  United Kingdom | |||||
| Achi Basadzishvili |  Georgia | IOI 2020 | ||||
| Giorgi Kobakhia | Georgia | |||||
| Giorgi Nadareishvili | Georgia | |||||
| Luka Mosiashvili | Georgia | |||||
| Andreas Rasvanis |  Greece | |||||
| Markos Radaios | Greece | |||||
| Markos Radaios | Greece | |||||
| Chong Ho Hsieh |  Hong Kong | |||||
| Harris Leung | Hong Kong | IOI 2020 IOI 2019 IOI 2018 IOI 2017 | ||||
| Lingrui Xie | Hong Kong | |||||
| Man Tsung Yeung | Hong Kong | IOI 2020 IOI 2019 | ||||
| Dorijan Lendvaj |  Croatia | IOI 2020 IOI 2019 | ||||
| Krešimir Nežmah | Croatia | IOI 2020 IOI 2019 | ||||
| Patrik Pavić | Croatia | IOI 2020 IOI 2019 | ||||
| Vito Anić | Croatia | |||||
| Gellért Tóth |  Hungary | |||||
| Kornél György Szabó | Hungary | |||||
| Márton Tamás Németh | Hungary | |||||
| Péter Varga | Hungary | |||||
| Edbert Geraldy Cangdinata |  Indonesia | IOI 2020 | ||||
| Nicholas Patrick | Indonesia | |||||
| Pikatan Arya Bramajati | Indonesia | IOI 2020 | ||||
| Rama Aryasuta Pangestu | Indonesia | IOI 2020 | ||||
| Suneet Mahajan |  Ireland | IOI 2020 | ||||
| Ayushi Mahajan | Ireland | |||||
| Oisín Davey | Ireland | IOI 2020IOI 2019 | ||||
| Benjamin Murray | Ireland | |||||
| Aditya Jain |  India | |||||
| Kshitij Sodani | India | IOI 2020 | ||||
| Pranjal Srivastava | India | |||||
| Udit Sanghi | India | IOI 2020 | ||||
| Ali Safary |  Iran, Islamic Republic of | IOI 2020 | ||||
| Ali Shahali | Iran, Islamic Republic of | |||||
| Alireza Kaviani | Iran, Islamic Republic of | |||||
| Alireza Keshavarz | Iran, Islamic Republic of | |||||
| Davide Bartoli |  Italy | IOI 2020 | ||||
| Filippo Casarin | Italy | IOI 2020 | ||||
| Tommaso Dossi | Italy | |||||
| Valerio Stancanelli | Italy | IOI 2020 | ||||
| Obada Sadaqa |  Jordan | |||||
| Daiki Kodama |  Japan | |||||
| Yuto Watanabe | Japan | |||||
| Tengiz Bekkoyonov |  Kyrgyzstan | |||||
| Daniyar Beishekeev | Kyrgyzstan | |||||
| Modestas Gujis |  Lithuania | IOI 2020 | ||||
| Daniel Murphy |  Luxembourg | |||||
| Rafael Dux | Luxembourg | IOI 2020 | ||||
| Andrei Alexandru |  Moldova, Republic of | |||||
| Mihai Spinei | Moldova, Republic of | |||||
| Stanislav Brega | Moldova, Republic of | |||||
| Victor Purice | Moldova, Republic of | |||||
| Alejandro Ozymandias Cepeda Beltran |  Mexico | IOI 2020 | ||||
| Fernanda Sarahy Mancilla Nuñez | Mexico | |||||
| Jose Angel Cazares Torres | Mexico | IOI 2020IOI 2019IOI 2018 | ||||
| Víctor Armando Jaramillo Moreno | Mexico | |||||
| Joseph Achimugu |  Nigeria | |||||
| Joseph Achimugu | Nigeria | |||||
| Andy van Horssen |  Netherlands | |||||
| Marco Meijer | Netherlands | IOI 2020 IOI 2019 | ||||
| Magnus Hegdahl |  Norway | IOI 2020 | ||||
| Pedro Costa |  Portugal | |||||
| Tiago Marques | Portugal | |||||
| António Neves | Portugal | |||||
| Tiago Oliveira Marques | Portugal | |||||
| Alexandru Luchianov |  Romania | IOI 2020 | ||||
| Donciu Mircea | Romania | |||||
| Popescu Ioan | Romania | |||||
| Tiberiu-Ioan Mușat | Romania | IOI 2018 | ||||
| Danila Usachev |  Russian Federation | |||||
| Egor Lifar | Russian Federation | IOI 2020 IOI 2019 IOI 2018 IOI 2017 | ||||
| Mikhail Budnikov | Russian Federation | |||||
| Timofey Fedoseev | Russian Federation | |||||
| Benjamin Bajd |  Slovenia | IOI 2020 IOI 2019 | ||||
| Domen Hočevar | Slovenia | IOI 2020 | ||||
| Lan Sevčnikar | Slovenia | IOI 2020 | ||||
| Matija Likar | Slovenia | |||||
| Adam Rajský |  Slovakia | |||||
| Matej Urban | Slovakia | IOI 2020 | ||||
| Ali Mansour |  Syrian Arab Republic | |||||
| Mohammad Nour Massri | Syrian Arab Republic | IOI 2020 IOI 2019 | ||||
| Dilshod Imomov |  Tajikistan | |||||
| Muhammad Hokimiyon | Tajikistan | |||||
| Shahrom Aminov | Tajikistan | IOI 2020 | ||||
| Voris Rakhimov | Tajikistan | |||||
| Dovran Akmyradov |  Turkmenistan | IOI 2020 | ||||
| Gurbanberdi Gulladyyev | Turkmenistan | IOI 2020IOI 2019 | ||||
| Muhammetali Ashyrmuhammedov | Turkmenistan | IOI 2020 | ||||
| Suleyman Atayev | Turkmenistan | IOI 2020IOI 2019 | ||||
| Amine Oueslati |  Tunisia | |||||
| Amine Trabelsi | Tunisia | |||||
| Hedi Chehaidar | Tunisia | |||||
| Louay Farah | Tunisia | |||||
| Cengiz Eray Aslan |  Turkey | |||||
| Yusuf Onur Usumez | Turkey | |||||
| Chen Kai Chang |  Taiwan | |||||
| Elliot En-Yi Liu | Taiwan | |||||
| Hsin-Wei Hou | Taiwan | |||||
| Ping-Hsuan Lin | Taiwan | IOI 2020 | ||||
| Andrii Kovryhin |  Ukraine | IOI 2020 | ||||
| Kostiantyn Savchuk | Ukraine | |||||
| Maksym Tur | Ukraine | |||||
| Oleh Naver | Ukraine | IOI 2020 | ||||
| Tim Feng |  United States | |||||
| Azimjon Urinov |  Uzbekistan | IOI 2020 | ||||
| Dilshodbek Khujaqulov | Uzbekistan | IOI 2020 | ||||
| Bao Truong Van Quoc |  Viet Nam | |||||
| Huy Le Quang | Viet Nam | IOI 2020 | ||||
| Phat Ho Ngoc Vinh | Viet Nam | |||||
| Vu Nguyen Hoang | Viet Nam |