All medalists.
IMO & IOI, including honourable mentions.
JVJiří VinárekCzechoslovakiaIMO1968 · 1969Competition recordSilver medal · Bronze medalJVJiří VotavaCzechoslovakiaIMO1959Competition recordHonourable mentionAutumn profileJWJiří WitzanyCzechoslovakiaIMO1983 · 1984Prague University of Economics and BusinessProfessorIndexed profileJWJischai WylerSwitzerlandIMO2017Competition recordHonourable mentionJBJitendra BaruaBangladeshIMO2023 · 2024 · 2025Competition recordHonourable mention · Bronze medalJNJitse NiesenNetherlandsIMO1993University of LeedsLecturer in Applied MathematicsIndexed profileJFJittat FakcharoenpholThailandIOI1992Competition recordGold medalIndexed profileJKJittichai KujanakanoknadThailandIMO1994Competition recordBronze medalJDJivko D. VelevBulgariaIMO1992Competition recordBronze medal
Ji Won KangRepublic of KoreaIMO2018 · 2019Jane StreetQuantitative Research InternAutumn profileJWJi Won KimRepublic of KoreaIOI2000 · 2001Competition recordGold medal · Silver medalJWJi Won PakDemocratic People's Republic of KoreaIMO2026Competition recordSilver medalJPJiwoong ParkRepublic of KoreaIMO1991 · 1992Fast Track AsiaChief Executive OfficerIndexed profileJGJiyang GaoChinaIMO2014 · 2015MomentaCEOIndexed profileJBJoachim BienvenüeFranceIOI2026Competition recordHonourable mentionJFJoachim FritzGerman Democratic RepublicIMO1967 · 1968Competition recordBronze medal · Silver medalJKJoachim KriegerSwitzerlandIMO1992 · 1993Ecole Polytechnique Fédérale de Lausanne (EPFL)ProfessorIndexed profileJOJoachim OrthaberAustriaIMO2008Competition recordHonourable mention
Joachim StudniaFranceIMO2017Mistral AIAI ScientistAutumn profileJVJoachim VoigtGerman Democratic RepublicIMO1969Competition recordBronze medalJBJoakim BergliNorwayIMO1992University of OsloAssociate professorIndexed profile
Joakim BlikstadSwedenIMO2016Radix TradingQuantitative ResearcherAutumn profileJoakim BlikstadSwedenIOI2014 · 2015 · 2016Radix TradingQuantitative ResearcherAutumn profileJUJóakim Uni ArnaldarsonIcelandIMO2026Competition recordHonourable mentionJMJoanna MaselAustraliaIMO1991Competition recordBronze medalIndexed profileJCJoão César Campos VargasBrazilIMO2015 · 2016 · 2017Competition recordBronze medal · Silver medalJDJoão Diogo Silva FerreiraPortugalIMO2004Competition recordHonourable mentionJLJoão Leitão GuerreiroPortugalIMO2006Competition recordBronze medalJLJoão Lucas Camelo SáBrazilIMO2010 · 2011 · 2012Domo InovaçãoAnalista de Testes | QA SRIndexed profileJMJoão Manuel Gonçalves CaldeiraPortugalIMO2006Competition recordBronze medalJMJoão Miguel Magalhães Dos SantosPortugalIMO2010 · 2011Competition recordHonourable mention · Bronze medalIndexed profileJMJoão Morais Carreira PereiraPortugalIMO2009Competition recordBronze medalJNJoão Nuno Pereira LourençoPortugalIMO2012Competition recordBronze medalJPJoão Paulo Campos OliveiraBrazilIOI2026Competition recordSilver medalJPJoão Pedro Bandeira LemosBrazilIMO2024 · 2025Colégio GGETutorIndexed profileJPJoão Pedro Correia MatiasPortugalIMO2007Competition recordBronze medalJPJoão Pedro Martins Dos SantosPortugalIMO2010Competition recordHonourable mentionJPJoao Pedro Ramos Viana CostaBrazilIMO2022Competition recordHonourable mentionIndexed profileJTJoão Tiago Fernandes RochaPortugalIMO2019Competition recordHonourable mentionJVJoão Victor Silva Dos SantosBrazilIMO2025Competition recordBronze medalJCJoaquim Cevallos MoralesSpainIMO2001NHSConsultorIndexed profileJSJoaquim SchaeverbekeBelgiumIOI2025 · 2026Competition recordHonourable mention · Bronze medalJSJoaquim Serra MontoliSpainIMO2004Competition recordHonourable mentionJAJoaquín Andrés ValderramaColombiaIMO2001 · 2002Competition recordBronze medalJGJoaquin GuerraPeruIMO2021 · 2022Competition recordSilver medal · Bronze medalJRJoaquin RodriguesArgentinaIOI2004Competition recordBronze medalJPJob PetrovčičSloveniaIMO2020University of Ljubljana, Faculty of Mathematics and Physics (FMF)Researcher / student, Lean 4 machine learning (University of Ljubljana)Autumn profileJIJocelyn Isabel Calderon CalderonBoliviaIMO2017Competition recordHonourable mentionJLJochen LattermannGerman Democratic RepublicIMO1982 · 1983Competition recordSilver medal · Bronze medalJBJoe BentonUnited KingdomIMO2014 · 2015 · 2016 · 2017Competition recordSilver medal · Gold medalIndexed profileJAJoel Au Heng HoiSingaporeIOI2022TeslaSales AdvisorIndexed profileJCJoel ColledgeUnited KingdomIOI2009LINBITSoftware DeveloperIndexed profileJEJoel Erik LarssonSwedenIMO2006Competition recordBronze medalJGJoel GunawanIndonesiaIOI2023Ikatan Alumni Tim Olimpiade Komputer Indonesia (IA TOKI)Scientific Committee (SEA TST)Indexed profileJHJoël HuberSwitzerlandIMO2020 · 2021Competition recordBronze medalJHJoël HuberSwitzerlandIOI2019 · 2020 · 2021Competition recordBronze medal · Silver medal · Gold medalJJJoel JonssonSwedenIOI2003Competition recordSilver medalJJJoel Junyao TanSingaporeIMO2016 · 2017 · 2018Competition recordSilver medal · Gold medalJRJoel RosenbergUnited States of AmericaIMO1990 · 1991Brilliance Financial TechnologySenior AdvisorIndexed profileJTJoel Tay Wei EnSingaporeIMO2004Hin Tat Augustine & PartnersIndexed profile
Ji Won KangRepublic of KoreaIMO2018 · 2019Jane StreetQuantitative Research InternAutumn profileJWJi Won KimRepublic of KoreaIOI2000 · 2001Competition recordGold medal · Silver medalJWJi Won PakDemocratic People's Republic of KoreaIMO2026Competition recordSilver medalJPJiwoong ParkRepublic of KoreaIMO1991 · 1992Fast Track AsiaChief Executive OfficerIndexed profileJGJiyang GaoChinaIMO2014 · 2015MomentaCEOIndexed profileJBJoachim BienvenüeFranceIOI2026Competition recordHonourable mentionJFJoachim FritzGerman Democratic RepublicIMO1967 · 1968Competition recordBronze medal · Silver medalJKJoachim KriegerSwitzerlandIMO1992 · 1993Ecole Polytechnique Fédérale de Lausanne (EPFL)ProfessorIndexed profileJOJoachim OrthaberAustriaIMO2008Competition recordHonourable mentionJoachim StudniaFranceIMO2017Mistral AIAI ScientistAutumn profileJVJoachim VoigtGerman Democratic RepublicIMO1969Competition recordBronze medalJBJoakim BergliNorwayIMO1992University of OsloAssociate professorIndexed profileJoakim BlikstadSwedenIMO2016Radix TradingQuantitative ResearcherAutumn profileJoakim BlikstadSwedenIOI2014 · 2015 · 2016Radix TradingQuantitative ResearcherAutumn profileJUJóakim Uni ArnaldarsonIcelandIMO2026Competition recordHonourable mentionJMJoanna MaselAustraliaIMO1991Competition recordBronze medalIndexed profileJCJoão César Campos VargasBrazilIMO2015 · 2016 · 2017Competition recordBronze medal · Silver medalJDJoão Diogo Silva FerreiraPortugalIMO2004Competition recordHonourable mentionJLJoão Leitão GuerreiroPortugalIMO2006Competition recordBronze medalJLJoão Lucas Camelo SáBrazilIMO2010 · 2011 · 2012Domo InovaçãoAnalista de Testes | QA SRIndexed profileJMJoão Manuel Gonçalves CaldeiraPortugalIMO2006Competition recordBronze medalJMJoão Miguel Magalhães Dos SantosPortugalIMO2010 · 2011Competition recordHonourable mention · Bronze medalIndexed profileJMJoão Morais Carreira PereiraPortugalIMO2009Competition recordBronze medalJNJoão Nuno Pereira LourençoPortugalIMO2012Competition recordBronze medalJPJoão Paulo Campos OliveiraBrazilIOI2026Competition recordSilver medalJPJoão Pedro Bandeira LemosBrazilIMO2024 · 2025Colégio GGETutorIndexed profileJPJoão Pedro Correia MatiasPortugalIMO2007Competition recordBronze medalJPJoão Pedro Martins Dos SantosPortugalIMO2010Competition recordHonourable mentionJPJoao Pedro Ramos Viana CostaBrazilIMO2022Competition recordHonourable mentionIndexed profileJTJoão Tiago Fernandes RochaPortugalIMO2019Competition recordHonourable mentionJVJoão Victor Silva Dos SantosBrazilIMO2025Competition recordBronze medalJCJoaquim Cevallos MoralesSpainIMO2001NHSConsultorIndexed profileJSJoaquim SchaeverbekeBelgiumIOI2025 · 2026Competition recordHonourable mention · Bronze medalJSJoaquim Serra MontoliSpainIMO2004Competition recordHonourable mentionJAJoaquín Andrés ValderramaColombiaIMO2001 · 2002Competition recordBronze medalJGJoaquin GuerraPeruIMO2021 · 2022Competition recordSilver medal · Bronze medalJRJoaquin RodriguesArgentinaIOI2004Competition recordBronze medalJPJob PetrovčičSloveniaIMO2020University of Ljubljana, Faculty of Mathematics and Physics (FMF)Researcher / student, Lean 4 machine learning (University of Ljubljana)Autumn profileJIJocelyn Isabel Calderon CalderonBoliviaIMO2017Competition recordHonourable mentionJLJochen LattermannGerman Democratic RepublicIMO1982 · 1983Competition recordSilver medal · Bronze medalJBJoe BentonUnited KingdomIMO2014 · 2015 · 2016 · 2017Competition recordSilver medal · Gold medalIndexed profileJAJoel Au Heng HoiSingaporeIOI2022TeslaSales AdvisorIndexed profileJCJoel ColledgeUnited KingdomIOI2009LINBITSoftware DeveloperIndexed profileJEJoel Erik LarssonSwedenIMO2006Competition recordBronze medalJGJoel GunawanIndonesiaIOI2023Ikatan Alumni Tim Olimpiade Komputer Indonesia (IA TOKI)Scientific Committee (SEA TST)Indexed profileJHJoël HuberSwitzerlandIMO2020 · 2021Competition recordBronze medalJHJoël HuberSwitzerlandIOI2019 · 2020 · 2021Competition recordBronze medal · Silver medal · Gold medalJJJoel JonssonSwedenIOI2003Competition recordSilver medalJJJoel Junyao TanSingaporeIMO2016 · 2017 · 2018Competition recordSilver medal · Gold medalJRJoel RosenbergUnited States of AmericaIMO1990 · 1991Brilliance Financial TechnologySenior AdvisorIndexed profileJTJoel Tay Wei EnSingaporeIMO2004Hin Tat Augustine & PartnersIndexed profile