All medalists.
IMO & IOI, including honourable mentions.
ETEnkhbaatar TsenguunMongoliaIMO2004GoogleBusiness Data ScientistIndexed profileELEnkhjargal LkhagvajavMongoliaIMO2010Moody's AnalyticsAssistant Director of ResearchIndexed profileEGEnkhtaivan GanbatMongoliaIMO2003Landis+GyrDevOps EngineerIndexed profileEEEnkhzaya EnkhtaivanMongoliaIMO2008Clever Inc.Senior Software EngineerIndexed profileEEEnkhzaya EnkhtaivanMongoliaIMO2009Clever Inc.Senior Software EngineerIndexed profileETEnkhzaya Tunge TamgatMongoliaIMO2007Competition recordBronze medalESEnmanuel Starlin Germosén De Los SantosDominican RepublicIMO2024 · 2025Competition recordHonourable mentionIndexed profileEBEnric Boix AdseraSpainIOI2014Wharton Statistics and Data ScienceAssistant ProfessorIndexed profileEKEnrico KravinaAustriaIMO2008AutoForm GroupDevelopment LeadIndexed profileEREnrico Rolando MartinezPhilippinesIMO2022Competition recordHonourable mentionEZEnrico ZontaItalyIMO2023 · 2024Competition recordBronze medal · Gold medalEAEnrique Adonay Hernández RafaelanoEl SalvadorIMO2022 · 2023 · 2024Competition recordHonourable mentionEAEnrique Antonio Rivera FerraiuoliPuerto RicoIMO2020 · 2021Competition recordBronze medalIndexed profileECEnrique Chiu HanMexicoIMO2013Competition recordSilver medalEGEnrique Garcia LopezSpainIMO1989Competition recordHonourable mentionIndexed profileELEnrique Lira VargasMexicoIOI2008Competition recordSilver medalEPEnrique Portela GarcíaCubaIMO1997Competition recordBronze medalEVEnrique ValereanhoPeruIMO1989Competition recordHonourable mentionELEnya LeroyBelgiumIMO2025Competition recordHonourable mentionEHEnzo HolandaBrazilIMO2026Competition recordSilver medalEIEnzo Ivamoto HirotaBrazilIOI2026Competition recordBronze medalEFEoghan FlanaganIrelandIMO1994Self-employedIndependent AI ResearcherIndexed profileECEoin CurranIrelandIOI1995 · 1996 · 1997An PostIndexed profileESEraj SabirovTajikistanIMO2023 · 2024Competition recordHonourable mentionIndexed profileEAEran AssafIsraelIMO2000 · 2001 · 2002 · 2003 · 2004Massachusetts Institute of TechnologyResearch ScientistIndexed profileEÜEray Ünsal AtayTürkiyeIMO2016CaltechGraduate Research AssistantIndexed profile
Erbol EsengulovKyrgyzstanIMO2020GaideAI EngineerAutumn profileEAErdan ApievKyrgyzstanIMO2020Competition recordBronze medalEBErdenebayar BayarmagnaiMongoliaIMO2015Square root of two mathematical training centerOlympiad teacherIndexed profileEEErdenebileg ErdenebatMongoliaIMO2019Khan BankBusiness Intelligence DeveloperIndexed profile
Erekle RoinishviliUnited KingdomIOI2021 · 2022 · 2023Jane StreetAutumn profileEBEren BaliTürkiyeIMO2001MonogramCofounder/CEOIndexed profileELErez LapidIsraelIMO1988 · 1989Competition recordBronze medal · Silver medalEMErfan MoeiniIslamic Republic of IranIMO2018Competition recordSilver medalIndexed profile
Erfan SalavatiIslamic Republic of IranIMO2004JPMorganChaseQuant Modeling LeadAutumn profileETErfan TavakoliIslamic Republic of IranIMO2011RasaSenior Product ManagerIndexed profileEUErgun UzalTürkiyeIMO1985Competition recordBronze medalEFEric Fleites PérezCubaIOI1999AmazonSr. Software Development EngineerIndexed profileEKErich KaltofenAustriaIMO1972 · 1974North Carolina State UniversityProfessorIndexed profileEIEric Iván Hernández PalaciosMexicoIMO2018 · 2019Competition recordHonourable mention · Bronze medalEAErick Akira KogaBrazilIMO2025 · 2026Toro InvestimentosDesenvolvedorIndexed profileEAErick Alejandro Mancera DávilaMexicoIMO1989Competition recordHonourable mentionEDErick Díaz PérezCubaIMO2025 · 2026Competition recordHonourable mention · Bronze medal
Eric K. WepsicUnited States of AmericaIMO1987 · 1988The D. E. Shaw GroupExecutiveAutumn profileELEric LaiCanadaIMO1992Competition recordHonourable mentionAutumn profileELEric LanderUnited States of AmericaIMO1974Competition recordSilver medalELEric LarsonUnited States of AmericaIMO2007 · 2009Competition recordSilver medal · Gold medalELEric LarssonSwedenIMO2009Competition recordHonourable mentionELEric LeeNew ZealandIMO2022Competition recordHonourable mentionELEric LiangNew ZealandIMO2022 · 2023Competition recordHonourable mentionELEric LüscherSwitzerlandIMO2024 · 2025NoneTutorIndexed profileEMEric MüllerGermanyIMO1986 · 1987 · 1988Competition recordSilver medalEPEric PabstUnited States of AmericaIOI1993Competition recordBronze medalIndexed profileEPEric PriceUnited States of AmericaIMO2005Competition recordGold medalEPEric PriceUnited States of AmericaIOI2004 · 2005Competition recordSilver medal · Gold medalEREric Ransom TreviñoMexicoIMO2023Competition recordSilver medalESEric SéréFranceIMO1984Competition recordBronze medalESEric ShenUnited States of AmericaIMO2022 · 2023Competition recordGold medalESEric ShenCanadaIMO2020 · 2021Competition recordGold medalIndexed profileEVEric VandenbusscheBelgiumIMO1996 · 1997Competition recordBronze medal
Erbol EsengulovKyrgyzstanIMO2020GaideAI EngineerAutumn profileEAErdan ApievKyrgyzstanIMO2020Competition recordBronze medalEBErdenebayar BayarmagnaiMongoliaIMO2015Square root of two mathematical training centerOlympiad teacherIndexed profileEEErdenebileg ErdenebatMongoliaIMO2019Khan BankBusiness Intelligence DeveloperIndexed profileErekle RoinishviliUnited KingdomIOI2021 · 2022 · 2023Jane StreetAutumn profileEBEren BaliTürkiyeIMO2001MonogramCofounder/CEOIndexed profileELErez LapidIsraelIMO1988 · 1989Competition recordBronze medal · Silver medalEMErfan MoeiniIslamic Republic of IranIMO2018Competition recordSilver medalIndexed profileErfan SalavatiIslamic Republic of IranIMO2004JPMorganChaseQuant Modeling LeadAutumn profileETErfan TavakoliIslamic Republic of IranIMO2011RasaSenior Product ManagerIndexed profileEUErgun UzalTürkiyeIMO1985Competition recordBronze medalEFEric Fleites PérezCubaIOI1999AmazonSr. Software Development EngineerIndexed profileEKErich KaltofenAustriaIMO1972 · 1974North Carolina State UniversityProfessorIndexed profileEIEric Iván Hernández PalaciosMexicoIMO2018 · 2019Competition recordHonourable mention · Bronze medalEAErick Akira KogaBrazilIMO2025 · 2026Toro InvestimentosDesenvolvedorIndexed profileEAErick Alejandro Mancera DávilaMexicoIMO1989Competition recordHonourable mentionEDErick Díaz PérezCubaIMO2025 · 2026Competition recordHonourable mention · Bronze medalEric K. WepsicUnited States of AmericaIMO1987 · 1988The D. E. Shaw GroupExecutiveAutumn profileELEric LaiCanadaIMO1992Competition recordHonourable mentionAutumn profileELEric LanderUnited States of AmericaIMO1974Competition recordSilver medalELEric LarsonUnited States of AmericaIMO2007 · 2009Competition recordSilver medal · Gold medalELEric LarssonSwedenIMO2009Competition recordHonourable mentionELEric LeeNew ZealandIMO2022Competition recordHonourable mentionELEric LiangNew ZealandIMO2022 · 2023Competition recordHonourable mentionELEric LüscherSwitzerlandIMO2024 · 2025NoneTutorIndexed profileEMEric MüllerGermanyIMO1986 · 1987 · 1988Competition recordSilver medalEPEric PabstUnited States of AmericaIOI1993Competition recordBronze medalIndexed profileEPEric PriceUnited States of AmericaIMO2005Competition recordGold medalEPEric PriceUnited States of AmericaIOI2004 · 2005Competition recordSilver medal · Gold medalEREric Ransom TreviñoMexicoIMO2023Competition recordSilver medalESEric SéréFranceIMO1984Competition recordBronze medalESEric ShenUnited States of AmericaIMO2022 · 2023Competition recordGold medalESEric ShenCanadaIMO2020 · 2021Competition recordGold medalIndexed profileEVEric VandenbusscheBelgiumIMO1996 · 1997Competition recordBronze medal