All medalists.
IMO & IOI, including honourable mentions.
JMJussi MarttinenFinlandIMO2022 · 2023Competition recordHonourable mentionIndexed profileJKJustas KlimavičiusLithuaniaIMO2014Vinted GoAndroid EngineerIndexed profileJČJustinas ČesonisLithuaniaIMO2012AdEx PartnersSenior Data and AI EngineerIndexed profileJPJustinas PelenisLithuaniaIMO2000Competition recordHonourable mentionIndexed profileJCJustin CahuzacFranceIMO2021Competition recordBronze medalJCJustin CahuzacFranceIOI2021Competition recordBronze medalJGJustin GhanAustraliaIMO1997 · 1998GoogleStaff Software EngineerIndexed profileJGJustin GohAustraliaIOI2025 · 2026Competition recordBronze medal · Silver medalJJJustin JiaNorwayIMO2025 · 2026Competition recordHonourable mention · Bronze medalJKJustin KooninAustraliaIMO1998UNSWAdjunct ProfessorIndexed profile
Justin Lim Kai ZeMalaysiaIMO2011 · 2012 · 2013 · 2014CitadelQuantitative ResearcherAutumn profileJustin Lim Kai ZeMalaysiaIOI2015CitadelQuantitative ResearcherAutumn profileJSJustin Santa BarbaraUnited KingdomIOI1995Competition recordBronze medalIndexed profileJSJustin SawonAustraliaIMO1991Competition recordHonourable mentionJTJustin TranAustraliaIMO2025Competition recordBronze medalJJJustyna Joanna JaworskaPolandIMO2019Competition recordBronze medalAutumn profileJRJusuf RamićBosnia and HerzegovinaIMO2003KlikaSenior Data EngineerIndexed profileJLJyrki LahtonenFinlandIMO1981 · 1982Turun yliopisto - University of TurkulecturerIndexed profileKSKaan SoralTürkiyeIOI2007Adventure LandIndexed profileKAKaarel August KurikEstoniaIMO2019Competition recordBronze medalIndexed profileKHKaarel HänniEstoniaIMO2016 · 2017Competition recordHonourable mentionIndexed profileKTKaarel ToometEstoniaIOI2024Competition recordBronze medalKTKaarel ToometEstoniaIMO2025 · 2026Competition recordHonourable mention · Silver medalKCKa Cheong LuiHong Kong, ChinaIOI2004 · 2005Competition recordSilver medal · Bronze medalKCKa Chon IeongMacauIMO2006 · 2007 · 2008Competition recordHonourable mentionKCKa Chon NgMacauIMO2020Competition recordHonourable mentionIndexed profileKKKacper KlukPolandIOI2018Competition recordSilver medalKPKacper PaciorekPolandIOI2022Competition recordSilver medalKWKada WilliamsHungaryIMO2015 · 2016 · 2017Competition recordSilver medal · Bronze medalIndexed profileKAKadyrberdi AnnabayevTurkmenistanIMO2018Competition recordHonourable mentionIndexed profileKFKa Fai YauHong Kong, ChinaIOI1993 · 1994Competition recordBronze medalKHKa Hei WaiHong Kong, ChinaIOI2019 · 2020Competition recordBronze medalKHKa Hing TsuiHong KongIMO1993 · 1994Competition recordBronze medal · Silver medalIndexed profileKHKa Ho LawHong KongIMO1999 · 2000Competition recordBronze medalKHKai-Chi HuangTaiwanIOI2013ISEESenior Software EngineerIndexed profileKCKai Chung TamMacauIMO2002Competition recordBronze medalIndexed profileKDKai Dainkhe ChristensenDenmarkIMO1996Competition recordBronze medalKKKaido KaarliEstoniaIMO1997Competition recordBronze medalIndexed profileKKKaie KubjasEstoniaIMO2004Aalto UniversityAssociate Professor (Tenured)Indexed profileKFKai Fong Ernest ChongSingaporeIMO2003Singapore University of Technology and Design (SUTD)Associate ProfessorIndexed profile
Kaihua CaiChinaIMO1996Competition recordSilver medalAutumn profileKJKai JiangUnited States of AmericaIOI2026Competition recordSilver medalKMKai Man UMacauIMO2011Competition recordHonourable mentionKCKai-Min ChungTaiwanIOI1998中央研究院ResearcherIndexed profileKCKaimyn ChapmanAustraliaIMO2012Competition recordSilver medalKIKa Io SitMacauIMO2007Competition recordHonourable mentionKPKai Pak ChanHong KongIMO1989Competition recordHonourable mentionKWKaiqi WanPanamaIMO2024Competition recordHonourable mentionKEKairat EshbolotovKyrgyzstanIMO2013 · 2014BlockMuras CapitalCrypto TraderAutumn profileKZKairat ZhubayevKazakhstanIMO2005Altyn BankHead of Financial Risks and Portfolio Analysis DivisionIndexed profileKKKairi KangroEstoniaIMO2007 · 2008 · 2009Competition recordHonourable mentionKMKaisa MatomäkiFinlandIMO2002Competition recordHonourable mentionKSKai ShenChinaIMO1992Competition recordGold medalKSKai Sing YeungHong KongIMO2003Competition recordBronze medalKSKai SunCanadaIMO2016CienaDirector, Product Line ManagementIndexed profileKUKai Un CheangMacauIMO2017EM Services Pte LtdLift EngineerIndexed profileKWKai WangTaiwanIMO2010 · 2011Competition recordSilver medalKWKaixin WangCanadaIMO2022 · 2023Competition recordSilver medalKRKaja RajterSloveniaIMO2022 · 2023Competition recordHonourable mentionKRKajetan RamszaPolandIOI2024ElevenLabsFull Stack EngineerIndexed profile
Justin Lim Kai ZeMalaysiaIMO2011 · 2012 · 2013 · 2014CitadelQuantitative ResearcherAutumn profileJustin Lim Kai ZeMalaysiaIOI2015CitadelQuantitative ResearcherAutumn profileJSJustin Santa BarbaraUnited KingdomIOI1995Competition recordBronze medalIndexed profileJSJustin SawonAustraliaIMO1991Competition recordHonourable mentionJTJustin TranAustraliaIMO2025Competition recordBronze medalJJJustyna Joanna JaworskaPolandIMO2019Competition recordBronze medalAutumn profileJRJusuf RamićBosnia and HerzegovinaIMO2003KlikaSenior Data EngineerIndexed profileJLJyrki LahtonenFinlandIMO1981 · 1982Turun yliopisto - University of TurkulecturerIndexed profileKSKaan SoralTürkiyeIOI2007Adventure LandIndexed profileKAKaarel August KurikEstoniaIMO2019Competition recordBronze medalIndexed profileKHKaarel HänniEstoniaIMO2016 · 2017Competition recordHonourable mentionIndexed profileKTKaarel ToometEstoniaIOI2024Competition recordBronze medalKTKaarel ToometEstoniaIMO2025 · 2026Competition recordHonourable mention · Silver medalKCKa Cheong LuiHong Kong, ChinaIOI2004 · 2005Competition recordSilver medal · Bronze medalKCKa Chon IeongMacauIMO2006 · 2007 · 2008Competition recordHonourable mentionKCKa Chon NgMacauIMO2020Competition recordHonourable mentionIndexed profileKKKacper KlukPolandIOI2018Competition recordSilver medalKPKacper PaciorekPolandIOI2022Competition recordSilver medalKWKada WilliamsHungaryIMO2015 · 2016 · 2017Competition recordSilver medal · Bronze medalIndexed profileKAKadyrberdi AnnabayevTurkmenistanIMO2018Competition recordHonourable mentionIndexed profileKFKa Fai YauHong Kong, ChinaIOI1993 · 1994Competition recordBronze medalKHKa Hei WaiHong Kong, ChinaIOI2019 · 2020Competition recordBronze medalKHKa Hing TsuiHong KongIMO1993 · 1994Competition recordBronze medal · Silver medalIndexed profileKHKa Ho LawHong KongIMO1999 · 2000Competition recordBronze medalKHKai-Chi HuangTaiwanIOI2013ISEESenior Software EngineerIndexed profileKCKai Chung TamMacauIMO2002Competition recordBronze medalIndexed profileKDKai Dainkhe ChristensenDenmarkIMO1996Competition recordBronze medalKKKaido KaarliEstoniaIMO1997Competition recordBronze medalIndexed profileKKKaie KubjasEstoniaIMO2004Aalto UniversityAssociate Professor (Tenured)Indexed profileKFKai Fong Ernest ChongSingaporeIMO2003Singapore University of Technology and Design (SUTD)Associate ProfessorIndexed profileKaihua CaiChinaIMO1996Competition recordSilver medalAutumn profileKJKai JiangUnited States of AmericaIOI2026Competition recordSilver medalKMKai Man UMacauIMO2011Competition recordHonourable mentionKCKai-Min ChungTaiwanIOI1998中央研究院ResearcherIndexed profileKCKaimyn ChapmanAustraliaIMO2012Competition recordSilver medalKIKa Io SitMacauIMO2007Competition recordHonourable mentionKPKai Pak ChanHong KongIMO1989Competition recordHonourable mentionKWKaiqi WanPanamaIMO2024Competition recordHonourable mentionKEKairat EshbolotovKyrgyzstanIMO2013 · 2014BlockMuras CapitalCrypto TraderAutumn profileKZKairat ZhubayevKazakhstanIMO2005Altyn BankHead of Financial Risks and Portfolio Analysis DivisionIndexed profileKKKairi KangroEstoniaIMO2007 · 2008 · 2009Competition recordHonourable mentionKMKaisa MatomäkiFinlandIMO2002Competition recordHonourable mentionKSKai ShenChinaIMO1992Competition recordGold medalKSKai Sing YeungHong KongIMO2003Competition recordBronze medalKSKai SunCanadaIMO2016CienaDirector, Product Line ManagementIndexed profileKUKai Un CheangMacauIMO2017EM Services Pte LtdLift EngineerIndexed profileKWKai WangTaiwanIMO2010 · 2011Competition recordSilver medalKWKaixin WangCanadaIMO2022 · 2023Competition recordSilver medalKRKaja RajterSloveniaIMO2022 · 2023Competition recordHonourable mentionKRKajetan RamszaPolandIOI2024ElevenLabsFull Stack EngineerIndexed profile