All medalists.
IMO & IOI, including honourable mentions.
HBHildo BijlNetherlandsIMO2006HU University of Applied Sciences Utrecht (Hogeschool Utrecht)Engineering teacherIndexed profileHLHilton LangeSouth AfricaIMO1994MicrosoftPrincipal Software Development EngineerIndexed profileHNHimanshu NautiyalIndiaIMO1991GleanField Global CTOIndexed profileHTHim Ting WongHong KongIMO1994 · 1995Centre for Advances in Reliability and Safety (CAiRS)Data ScientistAutumn profileHLHing Lun ChanHong Kong, ChinaIOI1992Competition recordSilver medalHSHing Shing WongHong KongIMO2013 · 2014Competition recordBronze medal · Silver medal
Hiroaki HosokawaJapanIOI2018Competition recordSilver medalAutumn profileHKHiroki KodamaJapanIMO1991 · 1992Competition recordSilver medal · Gold medalHKHiroki KomatsuJapanIMO2012Competition recordSilver medalHKHiroki KondoJapanIMO2000 · 2001 · 2002Competition recordBronze medal · Silver medalHKHiroki KoshiyamaJapanIMO2010 · 2011Competition recordSilver medalHTHiroki TamuraJapanIMO1991 · 1992Competition recordBronze medal · Silver medalHMHiroshi MiyazakiAustraliaIMO1998Competition recordSilver medalHYHiroshi YamashitaJapanIOI2010Competition recordSilver medalHIHirotaka IsaJapanIOI2014Competition recordSilver medalIndexed profileHYHirotaka YonedaJapanIOI2020Competition recordSilver medalHSHirotomo ShinokiJapanIMO2015Competition recordBronze medalHNHiroto NishikawaJapanIMO2018Kyoto UniversityJSPS Research Fellow (DC2)Autumn profileHMHitihami Mudiyanselage Mihiru Anushka BandaraSri LankaIMO2020 · 2021 · 2022 · 2023Competition recordHonourable mention · Bronze medalIndexed profileHÞHjalti Þór ÍsleifssonIcelandIMO2014 · 2015Competition recordHonourable mentionIndexed profileHSHleb StsiapanychauBelarusIMO2025Competition recordSilver medalHNHoa-Binh NguyenVietnamIOI1991Nexttech Group of TechnopreneursGroup Founder & ChairmanIndexed profileHAHoang Anh Phuc NgoVietnamIOI2014Competition recordSilver medalIndexed profileHBHoàng Bảo Linh TrầnVietnamIMO2012Galois, Inc.Principal ScientistIndexed profileHĐHoàng Đức ÝVietnamIMO2008Competition recordGold medalHDHoàng Dung NguyễnVietnamIMO2001Competition recordHonourable mentionAutumn profile
Hoang Hai Minh NguyenVietnamIOI2018Competition recordBronze medalAutumn profileHLHoang Le BaoVietnamIOI2007Competition recordBronze medalHLHoàng Le MinhVietnamIMO1974Center for Applications of Technology and Artifical IntelligenceDirectorIndexed profileHLHoàng Lê TháiVietnamIMO1998 · 1999Competition recordBronze medal · Gold medalHNHoàng Ngọc ChiếnVietnamIMO1983EcoSpeed VietNamQuản líIndexed profileHNHoang Nguyen DungVietnamIOI1996Competition recordBronze medalHPHoang Phuong NguyenVietnamIMO2026Competition recordSilver medalHSHoang Son PhamVietnamIMO2022Competition recordSilver medalHVHoàng Việt ĐỗVietnamIMO2018TrinoorSoftware DeveloperIndexed profileHBHoan-Phung BuiBelgiumIMO2007 · 2008Competition recordBronze medal · Honourable mentionAutumn profileHCHo Chung SiuHong KongIMO2005Competition recordSilver medalIndexed profileHCHock-Peng ChanSingaporeIMO1988National University of SingaporeTeaching ProfessionalIndexed profileHĐHồ Đình DuẩnVietnamIMO1978Competition recordBronze medalHTHoe Teck WeeSingaporeIMO1993 · 1995Competition recordBronze medal · Silver medalHGHo Gon JonDemocratic People's Republic of KoreaIMO2009Competition recordBronze medalHCHoi Cheong IamMacauIMO2014 · 2016Competition recordHonourable mentionHIHo Ieng NgaiMacauIMO2016 · 2017Polar Ankie Co.LtdIndexed profileHPHoi Pan ChuHong KongIMO1994Competition recordBronze medalHWHoi Wai YuHong KongIMO2014 · 2015 · 2016 · 2017Competition recordBronze medal · Silver medal · Gold medalHXHoi XuMacao, ChinaIOI2026Competition recordBronze medalHXHoi XuMacauIMO2026Competition recordHonourable mentionHLHok Lai NgHong KongIMO2023 · 2024Competition recordBronze medal · Silver medalHPHok Pan YipHong KongIMO2010Competition recordBronze medalHPHok Pun YuHong KongIMO2000 · 2001 · 2002 · 2003Competition recordSilver medal · Gold medalHLHo Leung ChanHong KongIMO1999Competition recordBronze medalIndexed profileHEHolger Endel RønnDenmarkIMO2024Competition recordHonourable mentionHEHolger EngGermanyIMO1979Competition recordSilver medalIndexed profileHCHo-Lin ChenTaiwanIMO1994 · 1995Competition recordSilver medalIndexed profileHCHong ChenChinaIOI1999 · 2000Competition recordGold medalHDHonghua DongChinaIOI2014Ant GroupIndexed profile
Hongjia MengSwitzerlandIMO2024 · 2025 · 2026Kantonale Mittelschule UriStudent, Kantonale Mittelschule Uri (Kollegi Uri)Autumn profileHJHong-Kwon JoRepublic of KoreaIMO2014Competition recordSilver medal
Hongming PuChinaIMO2014MetaMachine Learning EngineerAutumn profileHKHongnyung KimRepublic of KoreaIMO2018 · 2019Competition recordGold medal
Hiroaki HosokawaJapanIOI2018Competition recordSilver medalAutumn profileHKHiroki KodamaJapanIMO1991 · 1992Competition recordSilver medal · Gold medalHKHiroki KomatsuJapanIMO2012Competition recordSilver medalHKHiroki KondoJapanIMO2000 · 2001 · 2002Competition recordBronze medal · Silver medalHKHiroki KoshiyamaJapanIMO2010 · 2011Competition recordSilver medalHTHiroki TamuraJapanIMO1991 · 1992Competition recordBronze medal · Silver medalHMHiroshi MiyazakiAustraliaIMO1998Competition recordSilver medalHYHiroshi YamashitaJapanIOI2010Competition recordSilver medalHIHirotaka IsaJapanIOI2014Competition recordSilver medalIndexed profileHYHirotaka YonedaJapanIOI2020Competition recordSilver medalHSHirotomo ShinokiJapanIMO2015Competition recordBronze medalHNHiroto NishikawaJapanIMO2018Kyoto UniversityJSPS Research Fellow (DC2)Autumn profileHMHitihami Mudiyanselage Mihiru Anushka BandaraSri LankaIMO2020 · 2021 · 2022 · 2023Competition recordHonourable mention · Bronze medalIndexed profileHÞHjalti Þór ÍsleifssonIcelandIMO2014 · 2015Competition recordHonourable mentionIndexed profileHSHleb StsiapanychauBelarusIMO2025Competition recordSilver medalHNHoa-Binh NguyenVietnamIOI1991Nexttech Group of TechnopreneursGroup Founder & ChairmanIndexed profileHAHoang Anh Phuc NgoVietnamIOI2014Competition recordSilver medalIndexed profileHBHoàng Bảo Linh TrầnVietnamIMO2012Galois, Inc.Principal ScientistIndexed profileHĐHoàng Đức ÝVietnamIMO2008Competition recordGold medalHDHoàng Dung NguyễnVietnamIMO2001Competition recordHonourable mentionAutumn profileHoang Hai Minh NguyenVietnamIOI2018Competition recordBronze medalAutumn profileHLHoang Le BaoVietnamIOI2007Competition recordBronze medalHLHoàng Le MinhVietnamIMO1974Center for Applications of Technology and Artifical IntelligenceDirectorIndexed profileHLHoàng Lê TháiVietnamIMO1998 · 1999Competition recordBronze medal · Gold medalHNHoàng Ngọc ChiếnVietnamIMO1983EcoSpeed VietNamQuản líIndexed profileHNHoang Nguyen DungVietnamIOI1996Competition recordBronze medalHPHoang Phuong NguyenVietnamIMO2026Competition recordSilver medalHSHoang Son PhamVietnamIMO2022Competition recordSilver medalHVHoàng Việt ĐỗVietnamIMO2018TrinoorSoftware DeveloperIndexed profileHBHoan-Phung BuiBelgiumIMO2007 · 2008Competition recordBronze medal · Honourable mentionAutumn profileHCHo Chung SiuHong KongIMO2005Competition recordSilver medalIndexed profileHCHock-Peng ChanSingaporeIMO1988National University of SingaporeTeaching ProfessionalIndexed profileHĐHồ Đình DuẩnVietnamIMO1978Competition recordBronze medalHTHoe Teck WeeSingaporeIMO1993 · 1995Competition recordBronze medal · Silver medalHGHo Gon JonDemocratic People's Republic of KoreaIMO2009Competition recordBronze medalHCHoi Cheong IamMacauIMO2014 · 2016Competition recordHonourable mentionHIHo Ieng NgaiMacauIMO2016 · 2017Polar Ankie Co.LtdIndexed profileHPHoi Pan ChuHong KongIMO1994Competition recordBronze medalHWHoi Wai YuHong KongIMO2014 · 2015 · 2016 · 2017Competition recordBronze medal · Silver medal · Gold medalHXHoi XuMacao, ChinaIOI2026Competition recordBronze medalHXHoi XuMacauIMO2026Competition recordHonourable mentionHLHok Lai NgHong KongIMO2023 · 2024Competition recordBronze medal · Silver medalHPHok Pan YipHong KongIMO2010Competition recordBronze medalHPHok Pun YuHong KongIMO2000 · 2001 · 2002 · 2003Competition recordSilver medal · Gold medalHLHo Leung ChanHong KongIMO1999Competition recordBronze medalIndexed profileHEHolger Endel RønnDenmarkIMO2024Competition recordHonourable mentionHEHolger EngGermanyIMO1979Competition recordSilver medalIndexed profileHCHo-Lin ChenTaiwanIMO1994 · 1995Competition recordSilver medalIndexed profileHCHong ChenChinaIOI1999 · 2000Competition recordGold medalHDHonghua DongChinaIOI2014Ant GroupIndexed profileHongjia MengSwitzerlandIMO2024 · 2025 · 2026Kantonale Mittelschule UriStudent, Kantonale Mittelschule Uri (Kollegi Uri)Autumn profileHJHong-Kwon JoRepublic of KoreaIMO2014Competition recordSilver medalHongming PuChinaIMO2014MetaMachine Learning EngineerAutumn profileHKHongnyung KimRepublic of KoreaIMO2018 · 2019Competition recordGold medal