All medalists.
IMO & IOI, including honourable mentions.
OLOlga LeontevaUnion of Soviet Socialist RepublicsIMO19851999 - PresentfreelanceIndexed profileOMOlga Medrano Martín del CampoMexicoIMO2016University of ChicagoGraduate StudentIndexed profileOSOlha SilinaUkraineIMO2016BIScienceTeam LeadIndexed profileOTOlimdzhon TukhtarovTajikistanIMO2023Competition recordBronze medalOTOlimdzhon TukhtarovTajikistanIMO2024 · 2025 · 2026Competition recordBronze medal · Silver medalAutumn profileOOOlimjon OlimovUzbekistanIMO2021Competition recordBronze medalOPOlimjon PirahmadTajikistanIMO2010Competition recordSilver medalIndexed profileOSOlimjon SadinovUzbekistanIMO2006Japan Corporate Advisory Institute, Ltd.Head of Global MarketsIndexed profileOFOliver Fernández GilCubaIOI1999 · 2000Technische Universität DresdenWissenschaftlicher Mitarbeiter (Postdoktorand)Indexed profileOFOliver FisherAustraliaIOI2014GoogleSoftware EngineerIndexed profileOGOliver GeupelGerman Democratic RepublicIMO1984Competition recordBronze medalOJOlivér JanzerHungaryIMO2011 · 2012 · 2013Competition recordBronze medal · Silver medalOJOliver JohnsonUnited KingdomIMO1991 · 1992Competition recordHonourable mention · Bronze medalOLOliver-Matis LillEstoniaIOI2014Competition recordSilver medalIndexed profile
Oliver-Matis LillEstoniaIMO2013Algorithmization Sp. z o.o.Software EngineerAutumn profileOMOliver Maxim RiordanUnited KingdomIMO1988 · 1989 · 1990Competition recordSilver medal · Gold medalONOliver NickLuxembourgIMO2017WayveData ScientistAutumn profileONOliver NisumaaEstoniaIOI2016Competition recordBronze medalONOliver NisumaaEstoniaIMO2014 · 2015 · 2016Competition recordHonourable mention · Bronze medalOPOliver PfeifferAustriaIMO1995Competition recordHonourable mentionOROliver RudenNorwayIMO2022Competition recordHonourable mentionIndexed profileOSOliver SzaszHungaryIOI1992Competition recordBronze medalOTOliver ThomasUnited KingdomIMO1999 · 2000Competition recordSilver medal · Bronze medalOUOliver Ulises Morales OteroNicaraguaIMO2016Competition recordHonourable mentionOBOlivier BenoistFranceIMO2003Competition recordSilver medalOFOlivier FaysBelgiumIMO2021V2iEngineering InternIndexed profileOGOlivier GarçonnetFranceIMO2017Competition recordBronze medalOGOlivier GlasseySwitzerlandIOI1996IDHEAP | Institut de hautes études en administration publiqueAdjunct ProfessorIndexed profileOLOlivier LafitteFranceIMO1983Université Sorbonne Paris NordDirecteur adjoint de l'Institut GaliléeIndexed profileOPOlivier PonyFranceIMO1995FortuneoProject Management OfficerIndexed profileOKOlja KrstovićMontenegroIMO2014AdmiralBetData ScientistIndexed profile
Olle LapidusSwedenIMO2022Jane StreetQuantitative TraderAutumn profileOlle LapidusSwedenIOI2021 · 2022Jane StreetQuantitative TraderAutumn profile
Olle RehnquistSwedenIMO2023AMACSS (Association of Mathematical and Computer Science Students, University of Toronto Scarborough)Vice-President Academics, AMACSS (Association of Mathematical and Computer Science Students)Autumn profileOAOlli AnttilaFinlandIMO1977CZ-Tech ASChief Technology Officer and cofounderIndexed profileOHOlli HirviniemiFinlandIMO2010 · 2011IQM Quantum ComputersQuantum Algorithm EngineerIndexed profileOJOlli JärviniemiFinlandIMO2017 · 2018 · 2019IndependentResearcherIndexed profileOJOlli JärviniemiFinlandIOI2019IndependentResearcherIndexed profileOKOlli-Pekka KahilakoskiFinlandIOI2002University of TübingenPostdoctoral ResearcherIndexed profileOSOlli-Pentti SairaFinlandIOI2001 · 2002Competition recordSilver medal · Bronze medalIndexed profileOSOlli-Pentti SairaFinlandIMO2002Competition recordHonourable mentionIndexed profile
Olof Heimer TroengSwedenIMO2006EricssonResearcherAutumn profileOWOlov WilanderSwedenIMO1999GoogleSoftware EngineerIndexed profileOOOluwasanya Oluwafemi AweNigeriaIMO2014Competition recordHonourable mentionOKOlzhas KadyrakunovKazakhstanIMO2015BizWorld KAISTIndexed profileOAOmar Ahmed Ali ElAzazyEgyptIOI2009 · 2010 · 2011Competition recordBronze medal · Silver medalOAOmar AlrabiahSaudi ArabiaIMO2014 · 2015 · 2016 · 2017University of California, BerkeleyPHD StudentIndexed profileOAOmar Antolín CamarenaMexicoIMO1997 · 1998Competition recordBronze medal · Silver medalOEOmar El HousniMoroccoIMO2010AmazonAmazon ScholarIndexed profileOFOmar Farid Astudillo MarbánMexicoIMO2020 · 2021 · 2022 · 2023Competition recordBronze medal · Silver medalOHOmar HabibullahSaudi ArabiaIMO2017 · 2018 · 2019Mawhibaintensive training as a Mathematical Olympiad studentIndexed profile
Omar Muhammad KidwaiPakistanIMO2018Rokos Capital ManagementQuant DevAutumn profile
Omar ObeyaEgyptIOI2013Hidden RoadSoftware Engineer | Billing - Core TeamAutumn profileOPOmar PaladinesEcuadorIMO2012 · 2013MicrosoftSenior Software Engineering ManagerIndexed profileOSOmar Santiago ReyesPuerto RicoIMO2017Competition recordHonourable mentionIndexed profileOAOmer AngelIsraelIMO1992 · 1993Competition recordBronze medal · Gold medalÖAÖmer AvcıTürkiyeIMO2016University of OttawaPHD StudentIndexed profileOCOmer CerrahogluRomaniaIMO2009 · 2010 · 2011 · 2012 · 2013Ordulu TechnologySoftware EngineerIndexed profileÖEÖmer ErenTürkiyeIOI2012Competition recordSilver medalÖFÖmer Faruk ErzurumluoğluTürkiyeIMO2021TÜBİTAK BİLGEMComputer EngineerIndexed profile
Oliver-Matis LillEstoniaIMO2013Algorithmization Sp. z o.o.Software EngineerAutumn profileOMOliver Maxim RiordanUnited KingdomIMO1988 · 1989 · 1990Competition recordSilver medal · Gold medalONOliver NickLuxembourgIMO2017WayveData ScientistAutumn profileONOliver NisumaaEstoniaIOI2016Competition recordBronze medalONOliver NisumaaEstoniaIMO2014 · 2015 · 2016Competition recordHonourable mention · Bronze medalOPOliver PfeifferAustriaIMO1995Competition recordHonourable mentionOROliver RudenNorwayIMO2022Competition recordHonourable mentionIndexed profileOSOliver SzaszHungaryIOI1992Competition recordBronze medalOTOliver ThomasUnited KingdomIMO1999 · 2000Competition recordSilver medal · Bronze medalOUOliver Ulises Morales OteroNicaraguaIMO2016Competition recordHonourable mentionOBOlivier BenoistFranceIMO2003Competition recordSilver medalOFOlivier FaysBelgiumIMO2021V2iEngineering InternIndexed profileOGOlivier GarçonnetFranceIMO2017Competition recordBronze medalOGOlivier GlasseySwitzerlandIOI1996IDHEAP | Institut de hautes études en administration publiqueAdjunct ProfessorIndexed profileOLOlivier LafitteFranceIMO1983Université Sorbonne Paris NordDirecteur adjoint de l'Institut GaliléeIndexed profileOPOlivier PonyFranceIMO1995FortuneoProject Management OfficerIndexed profileOKOlja KrstovićMontenegroIMO2014AdmiralBetData ScientistIndexed profileOlle LapidusSwedenIMO2022Jane StreetQuantitative TraderAutumn profileOlle LapidusSwedenIOI2021 · 2022Jane StreetQuantitative TraderAutumn profileOlle RehnquistSwedenIMO2023AMACSS (Association of Mathematical and Computer Science Students, University of Toronto Scarborough)Vice-President Academics, AMACSS (Association of Mathematical and Computer Science Students)Autumn profileOAOlli AnttilaFinlandIMO1977CZ-Tech ASChief Technology Officer and cofounderIndexed profileOHOlli HirviniemiFinlandIMO2010 · 2011IQM Quantum ComputersQuantum Algorithm EngineerIndexed profileOJOlli JärviniemiFinlandIMO2017 · 2018 · 2019IndependentResearcherIndexed profileOJOlli JärviniemiFinlandIOI2019IndependentResearcherIndexed profileOKOlli-Pekka KahilakoskiFinlandIOI2002University of TübingenPostdoctoral ResearcherIndexed profileOSOlli-Pentti SairaFinlandIOI2001 · 2002Competition recordSilver medal · Bronze medalIndexed profileOSOlli-Pentti SairaFinlandIMO2002Competition recordHonourable mentionIndexed profileOlof Heimer TroengSwedenIMO2006EricssonResearcherAutumn profileOWOlov WilanderSwedenIMO1999GoogleSoftware EngineerIndexed profileOOOluwasanya Oluwafemi AweNigeriaIMO2014Competition recordHonourable mentionOKOlzhas KadyrakunovKazakhstanIMO2015BizWorld KAISTIndexed profileOAOmar Ahmed Ali ElAzazyEgyptIOI2009 · 2010 · 2011Competition recordBronze medal · Silver medalOAOmar AlrabiahSaudi ArabiaIMO2014 · 2015 · 2016 · 2017University of California, BerkeleyPHD StudentIndexed profileOAOmar Antolín CamarenaMexicoIMO1997 · 1998Competition recordBronze medal · Silver medalOEOmar El HousniMoroccoIMO2010AmazonAmazon ScholarIndexed profileOFOmar Farid Astudillo MarbánMexicoIMO2020 · 2021 · 2022 · 2023Competition recordBronze medal · Silver medalOHOmar HabibullahSaudi ArabiaIMO2017 · 2018 · 2019Mawhibaintensive training as a Mathematical Olympiad studentIndexed profileOmar Muhammad KidwaiPakistanIMO2018Rokos Capital ManagementQuant DevAutumn profileOmar ObeyaEgyptIOI2013Hidden RoadSoftware Engineer | Billing - Core TeamAutumn profileOPOmar PaladinesEcuadorIMO2012 · 2013MicrosoftSenior Software Engineering ManagerIndexed profileOSOmar Santiago ReyesPuerto RicoIMO2017Competition recordHonourable mentionIndexed profileOAOmer AngelIsraelIMO1992 · 1993Competition recordBronze medal · Gold medalÖAÖmer AvcıTürkiyeIMO2016University of OttawaPHD StudentIndexed profileOCOmer CerrahogluRomaniaIMO2009 · 2010 · 2011 · 2012 · 2013Ordulu TechnologySoftware EngineerIndexed profileÖEÖmer ErenTürkiyeIOI2012Competition recordSilver medalÖFÖmer Faruk ErzurumluoğluTürkiyeIMO2021TÜBİTAK BİLGEMComputer EngineerIndexed profile