All medalists.
IMO & IOI, including honourable mentions.
CLChristopher LiCanadaIMO2026Competition recordSilver medalCMChristopher MolinaEcuadorIMO2017Competition recordHonourable mentionCRChristopher Ray NashUnited KingdomIMO1988 · 1989Competition recordBronze medal · Silver medalCRChristopher Richard HillsUnited KingdomIMO1971Competition recordBronze medalCTChristopher TranAustraliaIMO2022 · 2023Scotch College MelbourneMathematics MentorIndexed profileCTChristopher TrevisanCanadaIOI2020 · 2021SingleStoreIndexed profileCTChristopher TuffleyNew ZealandIMO1990Competition recordBronze medalCWChristopher WulffGermanyIMO2005Competition recordBronze medalCFChristoph FronhöferGermanyIMO2018Competition recordHonourable mentionCKChristoph KrönerGermanyIMO2009Competition recordBronze medalCRChristoph ReisingerAustriaIMO1994University of OxfordFull Professor of Applied MathematicsIndexed profileCSChristoph SperlAustriaIOI2010GoogleStaff Software EngineerIndexed profileCSChristoph StrohAustriaIMO1990 · 1991MAGNA Powertrain / Engineering Center Steyr GmbH & Co KGManager KULIIndexed profileCZChristoph ZechnerAustriaIMO1989 · 1990Competition recordSilver medalCAChristos AdamarasGreeceIMO1990Competition recordHonourable mentionCAChristos AnastassiadesCyprusIMO2007 · 2008 · 2009 · 2010 · 2011Competition recordHonourable mention · Silver medal · Bronze medalIndexed profileCMChristos-Apos MantoulidisGreeceIOI2006 · 2007Rice UniversityAssociate Professor of MathematicsIndexed profileCAChristos AthanasiadisGreeceIMO1988 · 1989Competition recordBronze medal · Silver medalCFChristos FalasCyprusIOI2022Jane StreetSoftware EngineerAutumn profileCNChristos Nestor ChachamisGreeceIMO2014 · 2015Competition recordBronze medalCTChristos TzamosGreeceIOI2006Competition recordSilver medalIndexed profileCHChuan-Hsiang HuangTaiwanIMO1992Competition recordSilver medalIndexed profileCLChuan-Kai LinTaiwanIOI1996GitHubSoftware Engineering ManagerIndexed profileCTChuan Tze TeoUnited KingdomIMO1993Competition recordBronze medalCCChuanye ChenNew ZealandIOI2016Competition recordBronze medalCGChu Gia Vượng NguyễnVietnamIMO1993 · 1994Competition recordGold medal · Silver medalCLChuhan LiLatviaIMO2024Competition recordHonourable mentionIndexed profileCHChu Hong HoiMacauIMO1997Competition recordHonourable mentionCPChui Ping HoSingaporeIMO1994Competition recordHonourable mentionCCChun Chi HuangTaiwanIOI1999Competition recordBronze medalCFChun Fan TasiTaiwanIOI2000Novatek Microelectronics Corp.主任工程師Indexed profileCSChung-Chieh ShanTaiwanIMO1993 · 1994Indiana University BloomingtonAssociate ProfessorIndexed profileCHChung-Chun HuangTaiwanIMO2019Competition recordGold medalCYChung-Heng YehTaiwanIMO2003 · 2005 · 2006Competition recordSilver medal · Bronze medalIndexed profile
Chung Kil HurRepublic of KoreaIMO1994Seoul National UniversityProfessorAutumn profileCLChung Lam ChanHong KongIMO1997Competition recordBronze medalCSChung Song HongDemocratic People's Republic of KoreaIMO2011 · 2012 · 2013Competition recordGold medalCLChung-Te LiTaiwanIMO2001 · 2002SigmaStar Technology GroupSenior Manager; ConsultantIndexed profileCCChung-Yao ChengTaiwanIOI2017Competition recordGold medalIndexed profileCHChun Hei YiuHong KongIMO2022 · 2023Competition recordSilver medalIndexed profileCHChun Hin Ivan MakHong Kong, ChinaIOI2026Competition recordGold medalCHChun-Hsiung HsiaTaiwanIMO1994Competition recordSilver medalCHChun-Hung HsiaoTaiwanIOI2001GoogleTech LeadIndexed profileCIChun I HoMacauIMO2019Competition recordHonourable mentionCWChunji WangChinaIMO2023 · 2024UQ School of Electrical Engineering and Computer Science销售经理Indexed profileCLChun Ling YuHong KongIMO1995 · 1996Competition recordBronze medalCYChun-Pai YangTaiwanIOI2010intelli-train.aiLead AI Research ScientistIndexed profileCFChun-Sung FerngTaiwanIOI2005 · 2006Competition recordSilver medalCLChun-Ta LinTaiwanIOI2004 · 2005GoogleSenior Software EngineerIndexed profileCTChun Ting LauHong KongIMO2012 · 2013 · 2014Competition recordHonourable mention · Silver medal · Bronze medalIndexed profileCTChun Tung Raymond LoHong KongIMO2011Competition recordSilver medalCWChun Wai Carto WongHong KongIMO1999 · 2000MicrosoftSenior Applied ScientistIndexed profileCWChun WongHong Kong, ChinaIOI2022 · 2023 · 2024Competition recordBronze medal · Silver medal · Gold medalCYChun Yin Sampson LeeHong Kong, ChinaIOI2012GoogleIndexed profileCNChương Nguyễn XuânVietnamIMO2007Competition recordSilver medalCPChu Peng HoiMacauIMO1997Competition recordHonourable mentionCWChu Wee LimSingaporeIMO1991 · 1992Nikkoshi Electronics TradingDirectorIndexed profileCOCiarán O'ConaireIrelandIOI1999Competition recordBronze medal
Cihad ÖgeTürkiyeIOI2010MetaSenior Staff Software EngineerAutumn profileCDCillian DohertyIrelandIMO2017Somerset DolphinsJunior Swim CoachIndexed profile
Chung Kil HurRepublic of KoreaIMO1994Seoul National UniversityProfessorAutumn profileCLChung Lam ChanHong KongIMO1997Competition recordBronze medalCSChung Song HongDemocratic People's Republic of KoreaIMO2011 · 2012 · 2013Competition recordGold medalCLChung-Te LiTaiwanIMO2001 · 2002SigmaStar Technology GroupSenior Manager; ConsultantIndexed profileCCChung-Yao ChengTaiwanIOI2017Competition recordGold medalIndexed profileCHChun Hei YiuHong KongIMO2022 · 2023Competition recordSilver medalIndexed profileCHChun Hin Ivan MakHong Kong, ChinaIOI2026Competition recordGold medalCHChun-Hsiung HsiaTaiwanIMO1994Competition recordSilver medalCHChun-Hung HsiaoTaiwanIOI2001GoogleTech LeadIndexed profileCIChun I HoMacauIMO2019Competition recordHonourable mentionCWChunji WangChinaIMO2023 · 2024UQ School of Electrical Engineering and Computer Science销售经理Indexed profileCLChun Ling YuHong KongIMO1995 · 1996Competition recordBronze medalCYChun-Pai YangTaiwanIOI2010intelli-train.aiLead AI Research ScientistIndexed profileCFChun-Sung FerngTaiwanIOI2005 · 2006Competition recordSilver medalCLChun-Ta LinTaiwanIOI2004 · 2005GoogleSenior Software EngineerIndexed profileCTChun Ting LauHong KongIMO2012 · 2013 · 2014Competition recordHonourable mention · Silver medal · Bronze medalIndexed profileCTChun Tung Raymond LoHong KongIMO2011Competition recordSilver medalCWChun Wai Carto WongHong KongIMO1999 · 2000MicrosoftSenior Applied ScientistIndexed profileCWChun WongHong Kong, ChinaIOI2022 · 2023 · 2024Competition recordBronze medal · Silver medal · Gold medalCYChun Yin Sampson LeeHong Kong, ChinaIOI2012GoogleIndexed profileCNChương Nguyễn XuânVietnamIMO2007Competition recordSilver medalCPChu Peng HoiMacauIMO1997Competition recordHonourable mentionCWChu Wee LimSingaporeIMO1991 · 1992Nikkoshi Electronics TradingDirectorIndexed profileCOCiarán O'ConaireIrelandIOI1999Competition recordBronze medalCihad ÖgeTürkiyeIOI2010MetaSenior Staff Software EngineerAutumn profileCDCillian DohertyIrelandIMO2017Somerset DolphinsJunior Swim CoachIndexed profile