IBO 2021 (IBO Challenge II) – Results by medal category
Important notice: Within each price category, the results are sorted randomly.
| Delegation | Student name | Award |
| Uzbekistan | Khumoyun Norbekov | Gold |
| Chinese Taipei | Liang-Yun Chi | Gold |
| China | Binrui Mo | Gold |
| China | Jianyu Chen | Gold |
| Qatar | Noor Alnaimi | Gold |
| Singapore | Trivikram Mohan | Gold |
| Iran | Zahra Hoseininia | Gold |
| Turkey | Tolga Atilir | Gold |
| Chinese Taipei | Chia-Kai Wu | Gold |
| Chinese Taipei | Wei-Chen Lin | Gold |
| Bulgaria | Borislav Valentinov Stoyanov | Gold |
| Vietnam | Dang Le Minh Khang | Gold |
| Poland | Jakub Krzysztof Kwiatkowski | Gold |
| Russia | Mikhail Khandokhin | Gold |
| Indonesia | Nathanael Tjandra | Gold |
| Australia | Jackson Fu | Gold |
| Chinese Taipei | Zong-Yi Lin | Gold |
| Russia | David Zheglov | Gold |
| Czech Republic | Marek Pavlica | Gold |
| Uzbekistan | Abduvalieva Aziza | Gold |
| Thailand | Natchapol Vongtanakiat | Gold |
| Qatar | Ahmed Eyde | Gold |
| United States of America | Judson Lam | Gold |
| Azerbaijan | Matin Muradli | Gold |
| Azerbaijan | Ranal Gurbanov | Gold |
| China | Daijian Zhang | Gold |
| Qatar | Mohammed Elrafidi | Gold |
| China | Haoyang Han | Gold |
| United States of America | Albert Zhang | Gold |
| Bulgaria | Petar Stoilov Zhotev | Gold |
| Delegation | Student name | Award |
| India | Anshul Siwach | Silver |
| Vietnam | Ha Manh Duy | Silver |
| Hungary | Bich Diep Nguyen | Silver |
| Czech Republic | Matěj Pokorný | Silver |
| Russia | Ivan Prokhorov | Silver |
| Lithuania | Povilas Dapšys | Silver |
| United Kingdom | Neil Anand Sardesai | Silver |
| Singapore | Chong Yao Ong | Silver |
| Indonesia | Farrel Alfaza Marsetyo | Silver |
| Slovenia | Tjaša Sušnik | Silver |
| Switzerland | Sanjitha Sandeep Koundinya | Silver |
| Mongolia | Tergel Enkhtuvshin | Silver |
| Italy | Jacopo Cardinale | Silver |
| New Zealand | Shuxin Janet Guo | Silver |
| Latvia | Valerija Makarenko | Silver |
| Singapore | Bryan En Jie Sim | Silver |
| India | Naman Singh | Silver |
| United Kingdom | Alexander Tristan Colesmith | Silver |
| Russia | Eugene Yayloyan | Silver |
| Bulgaria | Viktor Gilin | Silver |
| Canada | Rico Dong | Silver |
| Hungary | Mate Mark Szeker | Silver |
| Vietnam | Nguyen Nga | Silver |
| Germany | David Sauer | Silver |
| United States of America | Greycen Ren | Silver |
| Poland | Jakub Igor Onopiuk | Silver |
| Italy | Gabriele Quaranta | Silver |
| Armenia | Gevorg Avanesyan | Silver |
| Japan | Kotaro Murai | Silver |
| Indonesia | Leonard Hartanto Jososudarmo | Silver |
| Belarus | Nadzeya Ushchapouskaya | Silver |
| Thailand | Yannaruk Thawornrungkit | Silver |
| Estonia | Johan Tamm | Silver |
| Hungary | Kata Kota | Silver |
| Germany | Marta Conti | Silver |
| United States of America | Derek Chen | Silver |
| Iran | Adibvafa Fallahpour | Silver |
| Uzbekistan | Yorkinbek Turdiboev | Silver |
| Germany | Kasimir Reich | Silver |
| Thailand | Pendhamma Sindhusen | Silver |
| Latvia | Huberts Zimackis | Silver |
| United Kingdom | Young Jun Lee | Silver |
| Hong Kong, China | Long Hei Anson So | Silver |
| Hong Kong, China | Lawrence Ng | Silver |
| Thailand | Kittitach Rattanawannachai | Silver |
| Hungary | Marton Szabo | Silver |
| Czech Republic | Tereza Maxerová | Silver |
| Singapore | Christopher Hiang Juey Tay | Silver |
| Germany | Fynn Kessels | Silver |
| South Korea | HyunHo Moon | Silver |
| Kazakhstan | Yerassyl Temirbekov | Silver |
| Canada | Raffaele Dengler | Silver |
| India | Dhiren Bhardwaj | Silver |
| Italy | Leonardo Morotti | Silver |
| Australia | Lior Yoffe | Silver |
| Delegation | Student name | Award |
| Sweden | Love Sundin | Bronze |
| Slovakia | Paulína Vicenová | Bronze |
| Australia | Maya Anderson | Bronze |
| Belarus | Artsiom Ramanouski | Bronze |
| Bangladesh | Raad Sharar | Bronze |
| Kazakhstan | Bakdaulet Ernazarov | Bronze |
| Iran | Danial Azadi | Bronze |
| Vietnam | Vo Thanh | Bronze |
| Slovakia | Matúš Leng | Bronze |
| Spain | Dario Sanz Rodríguez | Bronze |
| Estonia | Kaur Reidma | Bronze |
| Hong Kong, China | Yanyang Edward Xu | Bronze |
| Brazil | Érico Carvalho Leitão Pimentel | Bronze |
| Japan | Koki Sato | Bronze |
| Moldova | Cernei Andreea | Bronze |
| Belgium | Mander Van Roy | Bronze |
| Bulgaria | Lyuboslav Ivanov Stefanov | Bronze |
| Finland | Saana Tuomela | Bronze |
| Japan | Kento Kiriyama | Bronze |
| Belarus | Stanislaw Usaczow | Bronze |
| Czech Republic | Matěj Vostrčil | Bronze |
| Japan | Yusuke Yamagata | Bronze |
| Netherlands | Jarik Stoutjesdijk | Bronze |
| Spain | Mateo Almodovar De Haro | Bronze |
| Poland | Maciej Mieszko Maj | Bronze |
| Canada | Richard Ruizhe Zhang | Bronze |
| Slovakia | Ján Plachý | Bronze |
| Sweden | Tekla Nilsson | Bronze |
| Estonia | Sofia Marlene Haug | Bronze |
| Azerbaijan | Sadiyar Gafarov | Bronze |
| Sri Lanka | Jawarange Sumadu Dhananji Senadeera | Bronze |
| Slovenia | Lorena Vovk | Bronze |
| Belgium | Stef Johan Husken | Bronze |
| Turkmenistan | Hoshgeldi Hallayev | Bronze |
| Brazil | Lucas Batini Araujo | Bronze |
| Estonia | Claudia Olev | Bronze |
| South Korea | SeoHyun Cho | Bronze |
| Mongolia | Bodikhuu Erdenebaatar | Bronze |
| Philippines | Chiara Bernadette Zhang Tan-Gatue | Bronze |
| Bangladesh | Tasnim Binte Zulfiqar | Bronze |
| Hong Kong, China | Cheuk Man Chiu | Bronze |
| Lithuania | Edgaras Zaboras | Bronze |
| Netherlands | Lars Hamelijnck | Bronze |
| Latvia | Samanta Asite | Bronze |
| Kyrgyzstan | Baktynur Azhybaev | Bronze |
| Belarus | Ulyana Vauchankova | Bronze |
| India | Swaraj Nandi | Bronze |
| Croatia | Lovro Mirković | Bronze |
| Netherlands | Samantha Li | Bronze |
| Philippines | Jeremy Ace F Ng | Bronze |
| United Kingdom | Rory Narayan Welsh | Bronze |
| Mongolia | Purevbadral Bolor | Bronze |
| Luxembourg | Jean-Marc Furlano | Bronze |
| Moldova | Babuc Constantin | Bronze |
| South Korea | GeunYeong Kim | Bronze |
| Kazakhstan | Yernar Batyrzhanov | Bronze |
| Sweden | Louisa Eskelson | Bronze |
| Netherlands | Faas Brouwer | Bronze |
| Slovakia | Nikolaj Šutý | Bronze |
| Indonesia | Nathaniel Teopilus | Bronze |
| Spain | Rodrigo López López | Bronze |
| New Zealand | Cameron John Senior | Bronze |
| Azerbaijan | Aytaj Valiyeva | Bronze |
| Latvia | Markuss Gustavs Kenins | Bronze |
| Finland | Otto Keronen | Bronze |
| Poland | Kornel Rafał Wojasiński | Bronze |
| Slovenia | Nina Jakop | Bronze |
| Mexico | Jessica Martínez-Martínez | Bronze |
| Syria | Basel Alkanjo | Bronze |
| Spain | Paula Juan Royo | Bronze |
| Lithuania | Simonas Melaika | Bronze |
| Iran | Ali Dorosti | Bronze |
| Australia | Audrey Sutidjan | Bronze |
| Tajikistan | Shams Davlyatbekov | Bronze |
| Lithuania | Povilas Šaučiuvienas | Bronze |
| Luxembourg | Laurent Bommertz | Bronze |
| Mexico | Cruz Francisco Osuna-Aguirre | Bronze |
| Luxembourg | Raffaël Marth | Bronze |
| Slovenia | Zarja Doberšek | Bronze |
| Finland | Evert Marius Odé | Bronze |
| South Korea | WooYoung Jeong | Bronze |
| Delegation | Student name | Award |
| Switzerland | Orna Frohnert | Merit |
| Denmark | Poul Egdal Hempler | Merit |
| Denmark | Richard Borodin Schmidt | Merit |
| Bangladesh | Rayan Rahman | Merit |
| Turkmenistan | Aylar Begenjova | Merit |
| Argentina | Rebeca Estefanía Folgar | Merit |
| Brazil | João Pedro Moritz Carvalho | Merit |
| Saudi Arabia | Maryam Ghalib Al Hashim | Merit |
| Georgia | Giorgi Papulashvili | Merit |
| Switzerland | Malena Kradolfer | Merit |
| Brazil | Matheus Henrique Sicupira Lima | Merit |
| Portugal | Sara Domingues Alves | Merit |
| Portugal | Ricardo Martins Carvalho | Merit |
| Philippines | Jay Aundrey Tres Reyes | Merit |
| Saudi Arabia | Zainab Shaker Al Alawi | Merit |
| New Zealand | Sarah Jane Ellis | Merit |
| Argentina | Sara Valentina Mancuello | Merit |
| Saudi Arabia | Basil Faisal Habiballah | Merit |
| Croatia | Đurđica Kovačić | Merit |
| Croatia | Lukas Grbac Lacković | Merit |
| Bangladesh | A.S.M Abrar Jahin Tushar | Merit |
| South Africa | Yesol Jeong | Merit |
| New Zealand | Keyi Heng | Merit |
| Turkmenistan | Azat Meredov | Merit |
| Moldova | Mihalcean Marius | Merit |
| Philippines | Jose Nell Andrew Sala Tumulak | Merit |
| Switzerland | Anna Salud | Merit |
| Canada | Chuhan Qi | Merit |
| Finland | Oona Kurola | Merit |
| Norway | Savanna Nylund | Merit |
| Kazakhstan | Guldana Abduali | Merit |