All medalists.
IMO & IOI, including honourable mentions.
RWRalf WehrmannGermanyIMO1977Competition recordBronze medal
Rallis KaramichalisGreeceIMO2006Entrepreneur FirstFounder-in-ResidenceAutumn profileRCRalph Costa TeixeiraBrazilIMO1986 · 1987Competition recordGold medalRFRalph FurmaniakCanadaIMO2002Competition recordHonourable mentionIndexed profileRJRalph Johannes McDougallSouth AfricaIMO2017 · 2018Hexagon Asset Lifecycle IntelligenceIndexed profileRLRalph LehmannGerman Democratic RepublicIMO1974 · 1975Competition recordSilver medalRLRalph LindenUnited KingdomIOI2014Competition recordBronze medalRARama Aryasuta PangestuIndonesiaIOI2020 · 2021National University of SingaporeIndexed profile
Raman DzvinkouskiBelarusIOI2002FintechSoftware EngineerAutumn profileRMRaman MarchankaBelarusIMO2014SkyengПреподаватель математикиIndexed profileRMRaman MarkavetsBelarusIMO2022Competition recordBronze medalRURaman UdavichenkaBelarusIOI2007 · 2008YandexTeam lead at Yandex self-driving cars departmentIndexed profileRMRamazan MananovKyrgyzstanIOI2026Competition recordSilver medalRRRamazan RakhmatullinRussiaIOI2018Airglow StudiosFounderIndexed profile
Ram GoelUnited States of AmericaIMO2022CitadelQuantitative Research AnalystAutumn profileRJRamil JabiyevAzerbaijanIMO2016 · 2017 · 2018 · 2019Competition recordHonourable mention · Bronze medalIndexed profileRTRamin TaklubighashIslamic Republic of IranIMO1992TuringMathematicianIndexed profileRFRamiro Feria PurónCubaIMO1997Gumtree GroupSenior iOS DeveloperIndexed profileRLRamiro LafuenteArgentinaIMO2004Universidad Nacional de CórdobaProfesor AdjuntoIndexed profileRARamón Alejandro Reyes FajardoCubaIOI2009LuxoftIndexed profileRPRamona PoreitereLatviaIMO2023SEBCounterparty and Market Risk InternIndexed profileRJRamón José Aliaga VareaSpainIMO1999Competition recordBronze medalRMRamon Moreira NunesBrazilIMO2007Competition recordBronze medalRRRamón Rivas DíazCubaIOI1992Red HatPrincipal Software EngineerIndexed profileRSRamon Silva de LimaBrazilIOI2013Competition recordBronze medalIndexed profile
Ranald Yun Shao LamSingaporeIOI2012 · 2013 · 2014Jump Trading LLCOperations Trade Support (OTS) Software EngineerAutumn profileRDRandall DoughertyUnited States of AmericaIMO1976 · 1977 · 1978Competition recordSilver medal · Gold medal
Randy SugiantoIndonesiaIOI2002foodpandaSenior Android EngineerAutumn profileRYRanfeng YuChinaIMO2019Competition recordGold medalRDRangel DokovBulgariaIOI2004Competition recordSilver medalRLRanko LazićYugoslaviaIOI1991Competition recordGold medalIndexed profileRLRanko LazićYugoslaviaIMO1992Competition recordBronze medalIndexed profileRBRankothge Buddhihemal MahindaratneSri LankaIMO2005 · 2006Competition recordHonourable mention · Bronze medalRTRan TesslerIsraelIMO1999 · 2000 · 2001 · 2002Stealth Agentic AI StartupCo-FounderIndexed profileRORaouf Ould AliAlgeriaIOI2024Competition recordBronze medalRORaouf Ould AliAlgeriaIMO2024CQTechInternIndexed profileRARaphael AngstSwitzerlandIMO2019 · 2020ETH ZürichStudentIndexed profileRBRaphael Beuzart-PlessisFranceIMO2003 · 2004Competition recordBronze medalRCRaphael CoteFranceIMO1997Competition recordHonourable mention
Raphael DouadyFranceIMO1976 · 1977University of Paris I: Panthéon-SorbonneResearch ProfessorAutumn profileRDRaphael Dylan DalidaPhilippinesIMO2020 · 2021 · 2022 · 2023MIT Computer Science and Artificial Intelligence Laboratory (CSAIL)Undergraduate Research AssistantIndexed profileRDRaphael Dylan DalidaPhilippinesIOI2021 · 2022MIT Computer Science and Artificial Intelligence Laboratory (CSAIL)Undergraduate Research AssistantIndexed profileRGRaphael GaedtkeGermanyIOI2023Competition recordSilver medalRHRaphael Henrique RibasBrazilIOI2004 · 2005Jane StreetSoftware EngineerAutumn profileRHRaphael HeuchlAustriaIMO2024Competition recordHonourable mentionRPRaphaël PonsFranceIOI2024 · 2025 · 2026Competition recordBronze medal · Silver medalRSRaphael SchumacherSwitzerlandIMO2010Federal Office of Transport FOTSenior Project ManagerIndexed profileRSRaphael SteinerSwitzerlandIMO2009HuaweiResearch EngineerIndexed profileRNRareș-Andrei NeculauRomaniaIOI2024 · 2025 · 2026Competition recordSilver medal · Gold medalRDRareș Darius BuhaiRomaniaIOI2012 · 2013 · 2014 · 2015EPFLPostdoctoral ResearcherIndexed profileRTRareș-Felix TudoseRomaniaIOI2024 · 2025Competition recordBronze medal · Gold medalRMRasmey MakCambodiaIMO2007Fuxin Steel BuildingsGraduate EngineerIndexed profileRJRasmus Juhl ChristensenDenmarkIMO2017Implement Consulting GroupManagement ConsultantIndexed profileRZRasmus ZenkerGermanyIOI2026Competition recordSilver medalRMRastko MarinkovićYugoslaviaIMO1988 · 1989Competition recordBronze medal · Silver medalRGRasulbek GafforovUzbekistanIMO2023 · 2024 · 2025 · 2026Competition recordHonourable mention · Bronze medal · Silver medalRORasulbek OzodovUzbekistanIMO2019Xalq BankiLead Data AnalystIndexed profileRKRatibor KoptilinIMO2023Competition recordGold medalRKRatibor KoptilinIMO2024Competition recordGold medal
Rati GelashviliGeorgiaIOI2007Aptos LabsBlockchain Researcher (Founding Team)Autumn profile
Rallis KaramichalisGreeceIMO2006Entrepreneur FirstFounder-in-ResidenceAutumn profileRCRalph Costa TeixeiraBrazilIMO1986 · 1987Competition recordGold medalRFRalph FurmaniakCanadaIMO2002Competition recordHonourable mentionIndexed profileRJRalph Johannes McDougallSouth AfricaIMO2017 · 2018Hexagon Asset Lifecycle IntelligenceIndexed profileRLRalph LehmannGerman Democratic RepublicIMO1974 · 1975Competition recordSilver medalRLRalph LindenUnited KingdomIOI2014Competition recordBronze medalRARama Aryasuta PangestuIndonesiaIOI2020 · 2021National University of SingaporeIndexed profileRaman DzvinkouskiBelarusIOI2002FintechSoftware EngineerAutumn profileRMRaman MarchankaBelarusIMO2014SkyengПреподаватель математикиIndexed profileRMRaman MarkavetsBelarusIMO2022Competition recordBronze medalRURaman UdavichenkaBelarusIOI2007 · 2008YandexTeam lead at Yandex self-driving cars departmentIndexed profileRMRamazan MananovKyrgyzstanIOI2026Competition recordSilver medalRRRamazan RakhmatullinRussiaIOI2018Airglow StudiosFounderIndexed profileRam GoelUnited States of AmericaIMO2022CitadelQuantitative Research AnalystAutumn profileRJRamil JabiyevAzerbaijanIMO2016 · 2017 · 2018 · 2019Competition recordHonourable mention · Bronze medalIndexed profileRTRamin TaklubighashIslamic Republic of IranIMO1992TuringMathematicianIndexed profileRFRamiro Feria PurónCubaIMO1997Gumtree GroupSenior iOS DeveloperIndexed profileRLRamiro LafuenteArgentinaIMO2004Universidad Nacional de CórdobaProfesor AdjuntoIndexed profileRARamón Alejandro Reyes FajardoCubaIOI2009LuxoftIndexed profileRPRamona PoreitereLatviaIMO2023SEBCounterparty and Market Risk InternIndexed profileRJRamón José Aliaga VareaSpainIMO1999Competition recordBronze medalRMRamon Moreira NunesBrazilIMO2007Competition recordBronze medalRRRamón Rivas DíazCubaIOI1992Red HatPrincipal Software EngineerIndexed profileRSRamon Silva de LimaBrazilIOI2013Competition recordBronze medalIndexed profileRanald Yun Shao LamSingaporeIOI2012 · 2013 · 2014Jump Trading LLCOperations Trade Support (OTS) Software EngineerAutumn profileRDRandall DoughertyUnited States of AmericaIMO1976 · 1977 · 1978Competition recordSilver medal · Gold medalRandy SugiantoIndonesiaIOI2002foodpandaSenior Android EngineerAutumn profileRYRanfeng YuChinaIMO2019Competition recordGold medalRDRangel DokovBulgariaIOI2004Competition recordSilver medalRLRanko LazićYugoslaviaIOI1991Competition recordGold medalIndexed profileRLRanko LazićYugoslaviaIMO1992Competition recordBronze medalIndexed profileRBRankothge Buddhihemal MahindaratneSri LankaIMO2005 · 2006Competition recordHonourable mention · Bronze medalRTRan TesslerIsraelIMO1999 · 2000 · 2001 · 2002Stealth Agentic AI StartupCo-FounderIndexed profileRORaouf Ould AliAlgeriaIOI2024Competition recordBronze medalRORaouf Ould AliAlgeriaIMO2024CQTechInternIndexed profileRARaphael AngstSwitzerlandIMO2019 · 2020ETH ZürichStudentIndexed profileRBRaphael Beuzart-PlessisFranceIMO2003 · 2004Competition recordBronze medalRCRaphael CoteFranceIMO1997Competition recordHonourable mentionRaphael DouadyFranceIMO1976 · 1977University of Paris I: Panthéon-SorbonneResearch ProfessorAutumn profileRDRaphael Dylan DalidaPhilippinesIMO2020 · 2021 · 2022 · 2023MIT Computer Science and Artificial Intelligence Laboratory (CSAIL)Undergraduate Research AssistantIndexed profileRDRaphael Dylan DalidaPhilippinesIOI2021 · 2022MIT Computer Science and Artificial Intelligence Laboratory (CSAIL)Undergraduate Research AssistantIndexed profileRGRaphael GaedtkeGermanyIOI2023Competition recordSilver medalRHRaphael Henrique RibasBrazilIOI2004 · 2005Jane StreetSoftware EngineerAutumn profileRHRaphael HeuchlAustriaIMO2024Competition recordHonourable mentionRPRaphaël PonsFranceIOI2024 · 2025 · 2026Competition recordBronze medal · Silver medalRSRaphael SchumacherSwitzerlandIMO2010Federal Office of Transport FOTSenior Project ManagerIndexed profileRSRaphael SteinerSwitzerlandIMO2009HuaweiResearch EngineerIndexed profileRNRareș-Andrei NeculauRomaniaIOI2024 · 2025 · 2026Competition recordSilver medal · Gold medalRDRareș Darius BuhaiRomaniaIOI2012 · 2013 · 2014 · 2015EPFLPostdoctoral ResearcherIndexed profileRTRareș-Felix TudoseRomaniaIOI2024 · 2025Competition recordBronze medal · Gold medalRMRasmey MakCambodiaIMO2007Fuxin Steel BuildingsGraduate EngineerIndexed profileRJRasmus Juhl ChristensenDenmarkIMO2017Implement Consulting GroupManagement ConsultantIndexed profileRZRasmus ZenkerGermanyIOI2026Competition recordSilver medalRMRastko MarinkovićYugoslaviaIMO1988 · 1989Competition recordBronze medal · Silver medalRGRasulbek GafforovUzbekistanIMO2023 · 2024 · 2025 · 2026Competition recordHonourable mention · Bronze medal · Silver medalRORasulbek OzodovUzbekistanIMO2019Xalq BankiLead Data AnalystIndexed profileRKRatibor KoptilinIMO2023Competition recordGold medalRKRatibor KoptilinIMO2024Competition recordGold medalRati GelashviliGeorgiaIOI2007Aptos LabsBlockchain Researcher (Founding Team)Autumn profile