All medalists.
IMO & IOI, including honourable mentions.
HGHamed GhaffariaghdasIranIOI2025 · 2026Competition recordSilver medalHBHamid Ben MoussaMoroccoIMO2004Barclays Investment BankQuantitative AnalystAutumn profileHFHamid ForoughiIslamic Republic of IranIMO2001University of Warwick - Warwick Business SchoolAssociate Professor in Responsible ManagementIndexed profileHMHamid MahiniIranIOI2000Koi BiotherapeuticsCo-Founder & CEOIndexed profileHHHamidreza HedayatiIranIOI2017SotoonProduct DirectorIndexed profileHBHamish BaguleyNew ZealandIMO2020Competition recordBronze medalHPHamlet PetrosyanArmeniaIMO2023Competition recordBronze medalHPHamlet PetrosyanArmeniaIOI2022Competition recordBronze medalIndexed profileHAHammad Ali Khan SeyalPakistanIMO2011Competition recordHonourable mentionHHHamou H. TarikMoroccoIMO1988Competition recordBronze medalHEHampus EngsnerSwedenIMO2009VattenfallFundamental Model DeveloperIndexed profileHCHamrozjon ChuyanovUzbekistanIMO2007UZMIAChief of StaffIndexed profileHAHamza AchakMoroccoIMO2025Competition recordBronze medalAutumn profileHAHamza AllaberdiyevTurkmenistanIMO2023 · 2024 · 2025hillclimbIndexed profileHFHamza FawziEgyptIOI2005HivergeCo-founder and Chief ScientistIndexed profile
Hamzah AlshaikhiSaudi ArabiaIMO2020 · 2021MawhibaMath Olympiad TrainerAutumn profileHSHamzah ShafiSaudi ArabiaIMO2016SABICSenior Data ScientistIndexed profileHBHana BudáčováSlovakiaIMO2003 · 2004Competition recordHonourable mentionHŠHana ŠormováCzech RepublicIMO2007HI Company s.r.o.Chief ExecutiveIndexed profileHBHan Beng KoeIndonesiaIMO2007Competition recordHonourable mentionIndexed profileHCHang Chi NgMacao, ChinaIOI2024 · 2026Bank of ChinaCustomer Service RepresentativeIndexed profileHZHangrui ZhouChinaIOI2022Competition recordGold medalHDHangsheng DiaoChinaIMO2005Competition recordGold medalHHHan HuChinaIMO2007Competition recordSilver medalHYHanhui YuanChinaIMO1993Competition recordGold medalHVHanh Van PhamVietnamIOI2015Competition recordGold medalHAHanif Achdan PietoyoIndonesiaIOI2025Competition recordBronze medalIndexed profileHSHanissa ShamsuddinMalaysiaIMO2016 · 2017PETRONASM&A AnalystAutumn profileHJHan Jay YangTaiwanIOI2007 · 2008Competition recordSilver medal · Gold medalHZHankai ZhangUnited States of AmericaIOI2022Competition recordGold medalIndexed profileHCHanks ChongUnited KingdomIMO2023Competition recordBronze medalIndexed profileHCHanks ChongUnited KingdomIOI2022 · 2023 · 2024 · 2025Competition recordBronze medal · Silver medalIndexed profileHLHan Lin HsiehTaiwanIMO2009Competition recordSilver medalIndexed profileHBHannah BurtonUnited KingdomIMO2001Competition recordBronze medalHFHannah FoxUnited States of AmericaIMO2025Competition recordSilver medalHIHannes IhalainenFinlandIOI2016Competition recordBronze medalIndexed profileHSHanne SnijdersNetherlandsIMO2020Competition recordBronze medalHHHannu HelminenFinlandIMO1989Google Switzerland GmbHSoftware EngineerAutumn profileHNHannu NiemistöFinlandIMO1997 · 1998 · 1999Semantum OySoftware DeveloperIndexed profileHGHanon Guy Lima RossiBrazilIMO2010Competition recordHonourable mentionHKHanpil KangRepublic of KoreaIOI2015Competition recordGold medalHPHan Ping ChorSingaporeIMO1994Competition recordHonourable mentionHPHan Ping Davin ChorSingaporeIMO1995The Tuck School of Business at DartmouthMichael G. Fisch 1983 Professor and Globalization ChairIndexed profileHSHan Saem YoonRepublic of KoreaIMO1993Competition recordSilver medalHFHans-Dieter FoßGermanyIMO1979Competition recordSilver medalHGHans-Dietrich GronauGerman Democratic RepublicIMO1969Competition recordBronze medalHDHans DrauschkeAustriaIMO1995Competition recordHonourable mentionHGHans-Gert GräbeGerman Democratic RepublicIMO1974Uni LeipzigHochschullehrerIndexed profileHRHans-Görg RoosGerman Democratic RepublicIMO1968Competition recordSilver medalHFHans-Jürgen FischerGerman Democratic RepublicIMO1972Competition recordBronze medalHMHans MulderNetherlandsIMO1977 · 1978Competition recordGold medal · Bronze medalHKHans-Olof KuylenstiernaSwedenIMO1981Competition recordBronze medalHWHanson WangCanadaIOI2008 · 2009ArcwiseCo-FounderIndexed profileHRHans RankeGermanyIMO1979Competition recordSilver medalHRHans RullgårdSwedenIMO1994 · 1995 · 1996 · 1997Competition recordHonourable mention · Bronze medal · Silver medal · Gold medalHSHans Sihan ZhuGermanyIOI2026Ludwig-Maximilians-Universität München (Ludwig Maximilian University of Munich)PHD StudentIndexed profileHvHans van AntwerpenNetherlandsIMO1984Competition recordBronze medalHMHanwool MoonRepublic of KoreaIMO2012Competition recordGold medalHYHao-Cheng YangTaiwanIOI2016Competition recordBronze medalIndexed profileHJHao JengNew ZealandIMO2012Max Planck Institute for Multidisciplinary SciencesPostdoctoral ResearcherIndexed profile
Hamzah AlshaikhiSaudi ArabiaIMO2020 · 2021MawhibaMath Olympiad TrainerAutumn profileHSHamzah ShafiSaudi ArabiaIMO2016SABICSenior Data ScientistIndexed profileHBHana BudáčováSlovakiaIMO2003 · 2004Competition recordHonourable mentionHŠHana ŠormováCzech RepublicIMO2007HI Company s.r.o.Chief ExecutiveIndexed profileHBHan Beng KoeIndonesiaIMO2007Competition recordHonourable mentionIndexed profileHCHang Chi NgMacao, ChinaIOI2024 · 2026Bank of ChinaCustomer Service RepresentativeIndexed profileHZHangrui ZhouChinaIOI2022Competition recordGold medalHDHangsheng DiaoChinaIMO2005Competition recordGold medalHHHan HuChinaIMO2007Competition recordSilver medalHYHanhui YuanChinaIMO1993Competition recordGold medalHVHanh Van PhamVietnamIOI2015Competition recordGold medalHAHanif Achdan PietoyoIndonesiaIOI2025Competition recordBronze medalIndexed profileHSHanissa ShamsuddinMalaysiaIMO2016 · 2017PETRONASM&A AnalystAutumn profileHJHan Jay YangTaiwanIOI2007 · 2008Competition recordSilver medal · Gold medalHZHankai ZhangUnited States of AmericaIOI2022Competition recordGold medalIndexed profileHCHanks ChongUnited KingdomIMO2023Competition recordBronze medalIndexed profileHCHanks ChongUnited KingdomIOI2022 · 2023 · 2024 · 2025Competition recordBronze medal · Silver medalIndexed profileHLHan Lin HsiehTaiwanIMO2009Competition recordSilver medalIndexed profileHBHannah BurtonUnited KingdomIMO2001Competition recordBronze medalHFHannah FoxUnited States of AmericaIMO2025Competition recordSilver medalHIHannes IhalainenFinlandIOI2016Competition recordBronze medalIndexed profileHSHanne SnijdersNetherlandsIMO2020Competition recordBronze medalHHHannu HelminenFinlandIMO1989Google Switzerland GmbHSoftware EngineerAutumn profileHNHannu NiemistöFinlandIMO1997 · 1998 · 1999Semantum OySoftware DeveloperIndexed profileHGHanon Guy Lima RossiBrazilIMO2010Competition recordHonourable mentionHKHanpil KangRepublic of KoreaIOI2015Competition recordGold medalHPHan Ping ChorSingaporeIMO1994Competition recordHonourable mentionHPHan Ping Davin ChorSingaporeIMO1995The Tuck School of Business at DartmouthMichael G. Fisch 1983 Professor and Globalization ChairIndexed profileHSHan Saem YoonRepublic of KoreaIMO1993Competition recordSilver medalHFHans-Dieter FoßGermanyIMO1979Competition recordSilver medalHGHans-Dietrich GronauGerman Democratic RepublicIMO1969Competition recordBronze medalHDHans DrauschkeAustriaIMO1995Competition recordHonourable mentionHGHans-Gert GräbeGerman Democratic RepublicIMO1974Uni LeipzigHochschullehrerIndexed profileHRHans-Görg RoosGerman Democratic RepublicIMO1968Competition recordSilver medalHFHans-Jürgen FischerGerman Democratic RepublicIMO1972Competition recordBronze medalHMHans MulderNetherlandsIMO1977 · 1978Competition recordGold medal · Bronze medalHKHans-Olof KuylenstiernaSwedenIMO1981Competition recordBronze medalHWHanson WangCanadaIOI2008 · 2009ArcwiseCo-FounderIndexed profileHRHans RankeGermanyIMO1979Competition recordSilver medalHRHans RullgårdSwedenIMO1994 · 1995 · 1996 · 1997Competition recordHonourable mention · Bronze medal · Silver medal · Gold medalHSHans Sihan ZhuGermanyIOI2026Ludwig-Maximilians-Universität München (Ludwig Maximilian University of Munich)PHD StudentIndexed profileHvHans van AntwerpenNetherlandsIMO1984Competition recordBronze medalHMHanwool MoonRepublic of KoreaIMO2012Competition recordGold medalHYHao-Cheng YangTaiwanIOI2016Competition recordBronze medalIndexed profileHJHao JengNew ZealandIMO2012Max Planck Institute for Multidisciplinary SciencesPostdoctoral ResearcherIndexed profile