All medalists.
IMO & IOI, including honourable mentions.
ÖFÖmer Faruk TekinTürkiyeIMO2008Competition recordGold medalOTOmer TanovićBosnia and HerzegovinaIMO2000Analog DevicesDirector, Algorithms and Data ScienceIndexed profileÖTÖmer TopaloğluTürkiyeIMO2018Dorak Holdingbütçe raporlamaIndexed profileOAOmid AminiIslamic Republic of IranIMO1998Competition recordGold medalOHOmid Hatami VarzanehIslamic Republic of IranIMO2005Institute for Research in Fundamental SciencesPostdoctoral ResearcherIndexed profileONOmid Naghshinen AIslamic Republic of IranIMO1994Competition recordBronze medalOAOmraan Ahmadi DarvishvIslamic Republic of IranIMO1993Institute for Research in Fundamental Sciences (IPM)Associate ProfessorIndexed profileOBOmri Ben EliezerIsraelIMO2007 · 2008 · 2009Technion - Israel Institute of TechnologySenior Lecturer (Assistant Professor) of Computer ScienceIndexed profileONOmri Nisan SolanIsraelIMO2012 · 2013 · 2014Competition recordSilver medal · Gold medalOPOmri PeerIsraelIMO2016MedDev SoftSoftware EngineerIndexed profileOZOmri ZemerIsraelIMO2021 · 2022Competition recordSilver medal · Gold medalODOmurbek DzhamalovKyrgyzstanIOI2019Teza TechnologiesQuantitative ResearcherAutumn profileOBOndrej BaranovičSlovakiaIOI2018 · 2019ESETSoftware EngineerIndexed profileOBOndřej BílkaCzech RepublicIOI2005Imatic Software, s.r.oIndexed profileOBOndrej BudáčSlovakiaIMO2004 · 2005 · 2006GoogleSenior Software EngineerIndexed profileOHOndřej HübschCzech RepublicIOI2012 · 2014Competition recordBronze medalOKOndřej KlímaCzech RepublicIMO1993Brno University of TechnologyResearch AssistantIndexed profileOKOndrej KováčSlovakiaIMO2011SAP.NET DeveloperIndexed profileOMOndrej MikulášSlovakiaIMO2007StoryousNodeJS team leadIndexed profileOSOndřej SladkýCzech RepublicIOI2020 · 2021Stealth AI Safety StartupAI ResearcherIndexed profileOŠOndrej ŠuchCzechoslovakiaIMO1988 · 1989 · 1990Institute of Mathematics and Computer Science, University of LatviaresearcherIndexed profileOSOndřej SuchýCzech RepublicIMO2000ondrejsuchy.czPsychotherapist, counsellorIndexed profileOHOng Hong YangSingaporeIOI1993Competition recordBronze medalOSOng Shien JinMalaysiaIMO2000Asia School of BusinessProfessor of PracticeIndexed profile
Onjo LeeRepublic of KoreaIOI2019Competition recordBronze medalAutumn profile
Onolt KhurtsbilguunMongoliaIOI2023 · 2024CaladanSoftware Engineer InternAutumn profileODOnur DoğanTürkiyeIMO1998 · 1999ASMLSr. Lead EngineerIndexed profileOKOnur KorkmazTürkiyeIMO2017Indiana University BloomingtonAssociate InstructorIndexed profileOSOnur SulakTürkiyeIMO2016Competition recordSilver medalOYOn Yip ChungHong KongIMO2005 · 2006GT-tronics LimitedDevelopment managerIndexed profileOLOran LangIsraelIMO1998 · 1999 · 2000 · 2001GoogleSoftware Engineer at Google ResearchIndexed profileOBOren BeckerIsraelIOI2004Competition recordBronze medal
Oren NechushtanIsraelIMO1993MenthodaChief Technology OfficerAutumn profileOBOrest BucicovskiRomaniaIMO1981 · 1982 · 1983Competition recordSilver medal · Bronze medalOLOrestis LignosGreeceIMO2020 · 2021 · 2022 · 2023 · 2024Competition recordHonourable mention · Bronze medal · Silver medalIndexed profileOSOrest SherkoAlbaniaIMO2026Competition recordHonourable mentionOAOrges AjvaziKosovoIMO2023 · 2024solution25 - Shopware Platinum AgencyBack End Developer InternIndexed profileOEOrgil-Erdene ErdenebaatarMongoliaIMO2012AND Systems Tech LLCSenior Data ScientistIndexed profileOFOri FrankelIsraelIMO2022 · 2023Competition recordSilver medal · Bronze medalIndexed profileOGOri GanorIsraelIMO1982 · 1983 · 1985Xoom, A PayPal ServiceSoftware EngineerIndexed profileOAOriol Andreu Sole PiMexicoIMO2017 · 2018Competition recordHonourable mention · Bronze medalOBOriol Baeza GuaschSpainIMO2019Contrarellotge MatemàticaProblem ProposerIndexed profileOJOrjan JohansenNorwayIMO1989Competition recordHonourable mentionOEOrkunt Ediz ÖzkayaTürkiyeIOI1993 · 1994Competition recordBronze medalÖSÖrn StefánssonIcelandIMO2005 · 2006InvectorDeveloperIndexed profileOWOron WangUnited States of AmericaIMO2026Competition recordBronze medalOFOrsini FloresNicaraguaIMO2013Compañia Cervecera de Nicaragua S.AEspecialista en Análisis de Datos / Data Analytics SpecialistIndexed profileOLOrsolya Lili JanzerHungaryIMO2018Competition recordSilver medalIndexed profileOLOrsolya Lili JanzerHungaryIOI2017 · 2018Competition recordBronze medalIndexed profileOGOrtwin GasperGermanyIMO1981Competition recordGold medalOTOr TzukIsraelIMO1994 · 1995Competition recordBronze medal
Osama AlkhodairyEgyptIOI2020 · 2021Jane StreetSoftware EngineerAutumn profileOMOsama Mahmood KhawarSri LankaIMO2013Competition recordHonourable mentionOIOsamu IyamaJapanIMO1990Competition recordBronze medalOAOscar Arguedas LeivaCosta RicaIMO2011 · 2012Hospice of MichiganData AnalystIndexed profile
Oscar Balcells ObesoSpainIOI2020AnthropicMember of Technical StaffAutumn profileOEOscar Emilio Quesada HerreraCosta RicaIMO2012Competition recordHonourable mentionOFOscar Felipe Bernal PedrazaColombiaIMO1997 · 1998Competition recordBronze medal · Gold medalOFOscar FischlerFranceIOI2021 · 2023 · 2024Competition recordBronze medal · Silver medalOFOscar FischlerFranceIMO2022 · 2023 · 2024Competition recordBronze medal · Silver medal
Onjo LeeRepublic of KoreaIOI2019Competition recordBronze medalAutumn profileOnolt KhurtsbilguunMongoliaIOI2023 · 2024CaladanSoftware Engineer InternAutumn profileODOnur DoğanTürkiyeIMO1998 · 1999ASMLSr. Lead EngineerIndexed profileOKOnur KorkmazTürkiyeIMO2017Indiana University BloomingtonAssociate InstructorIndexed profileOSOnur SulakTürkiyeIMO2016Competition recordSilver medalOYOn Yip ChungHong KongIMO2005 · 2006GT-tronics LimitedDevelopment managerIndexed profileOLOran LangIsraelIMO1998 · 1999 · 2000 · 2001GoogleSoftware Engineer at Google ResearchIndexed profileOBOren BeckerIsraelIOI2004Competition recordBronze medalOren NechushtanIsraelIMO1993MenthodaChief Technology OfficerAutumn profileOBOrest BucicovskiRomaniaIMO1981 · 1982 · 1983Competition recordSilver medal · Bronze medalOLOrestis LignosGreeceIMO2020 · 2021 · 2022 · 2023 · 2024Competition recordHonourable mention · Bronze medal · Silver medalIndexed profileOSOrest SherkoAlbaniaIMO2026Competition recordHonourable mentionOAOrges AjvaziKosovoIMO2023 · 2024solution25 - Shopware Platinum AgencyBack End Developer InternIndexed profileOEOrgil-Erdene ErdenebaatarMongoliaIMO2012AND Systems Tech LLCSenior Data ScientistIndexed profileOFOri FrankelIsraelIMO2022 · 2023Competition recordSilver medal · Bronze medalIndexed profileOGOri GanorIsraelIMO1982 · 1983 · 1985Xoom, A PayPal ServiceSoftware EngineerIndexed profileOAOriol Andreu Sole PiMexicoIMO2017 · 2018Competition recordHonourable mention · Bronze medalOBOriol Baeza GuaschSpainIMO2019Contrarellotge MatemàticaProblem ProposerIndexed profileOJOrjan JohansenNorwayIMO1989Competition recordHonourable mentionOEOrkunt Ediz ÖzkayaTürkiyeIOI1993 · 1994Competition recordBronze medalÖSÖrn StefánssonIcelandIMO2005 · 2006InvectorDeveloperIndexed profileOWOron WangUnited States of AmericaIMO2026Competition recordBronze medalOFOrsini FloresNicaraguaIMO2013Compañia Cervecera de Nicaragua S.AEspecialista en Análisis de Datos / Data Analytics SpecialistIndexed profileOLOrsolya Lili JanzerHungaryIMO2018Competition recordSilver medalIndexed profileOLOrsolya Lili JanzerHungaryIOI2017 · 2018Competition recordBronze medalIndexed profileOGOrtwin GasperGermanyIMO1981Competition recordGold medalOTOr TzukIsraelIMO1994 · 1995Competition recordBronze medalOsama AlkhodairyEgyptIOI2020 · 2021Jane StreetSoftware EngineerAutumn profileOMOsama Mahmood KhawarSri LankaIMO2013Competition recordHonourable mentionOIOsamu IyamaJapanIMO1990Competition recordBronze medalOAOscar Arguedas LeivaCosta RicaIMO2011 · 2012Hospice of MichiganData AnalystIndexed profileOscar Balcells ObesoSpainIOI2020AnthropicMember of Technical StaffAutumn profileOEOscar Emilio Quesada HerreraCosta RicaIMO2012Competition recordHonourable mentionOFOscar Felipe Bernal PedrazaColombiaIMO1997 · 1998Competition recordBronze medal · Gold medalOFOscar FischlerFranceIOI2021 · 2023 · 2024Competition recordBronze medal · Silver medalOFOscar FischlerFranceIMO2022 · 2023 · 2024Competition recordBronze medal · Silver medal