All medalists.
IMO & IOI, including honourable mentions.
Rati GelashviliGeorgiaIMO2006 · 2007Aptos LabsBlockchain Researcher (Founding Team)Autumn profileRRRati RatianiGeorgiaIMO2024Competition recordBronze medalRDRatko DardaBosnia and HerzegovinaIMO2009 · 2010 · 2011 · 2012Sabanci UniversityPostdoctorantIndexed profileRRRauan RakhmetKazakhstanIMO2010 · 2011Competition recordSilver medal · Bronze medalRDRaufdzhon DadabaevTajikistanIMO2020 · 2022Competition recordHonourable mention · Bronze medalRARaul Alfredo Alcántara CastilloPeruIMO2015 · 2016 · 2017Competition recordGold medal · Silver medalRARaúl AlonsoSpainIMO2014CTIC Technology CentreQuantum Computing ResearcherIndexed profileRARaúl Arderí GarcíaCubaIMO2000 · 2001Competition recordBronze medal · Silver medalRARaúl Arturo Chávez SarmientoPeruIMO2009 · 2010 · 2011 · 2012Competition recordBronze medal · Silver medal · Gold medalRDRaúl Delgado de la CruzCubaIOI2004Centro de Estudios de Matemática para Ciencias Técnicasprofesor universitario e investigadorIndexed profileRGRaúl Gómez MuñozMexicoIMO2000Competition recordBronze medalIndexed profileRGRaúl GonzálezSpainIMO2013Competition recordHonourable mentionRMRaúl Marín CarreraMexicoIMO1991Competition recordHonourable mentionRQRaúl Queiroz Do Vale de Noronha PenaguiãoPortugalIMO2009 · 2010 · 2011HAEUSLER AGSoftware EngineerIndexed profileRSRaúl Segura AcevedoMexicoIMO1990Competition recordHonourable mentionRSRauno SiinmaaEstoniaIMO2007 · 2009 · 2010LHVIndexed profile
Ravi JagadeesanUnited States of AmericaIMO2012Stanford UniversityAssistant Professor Of EconomicsAutumn profileRKRavi KantIndiaIMO1995Competition recordBronze medalRMRavindra MaharajTrinidad and TobagoIMO1994 · 1995Competition recordHonourable mentionRRRavi RamkissoonTrinidad and TobagoIOI1995OracleConsulting Software EngineerIndexed profileRVRavi VakilCanadaIMO1986 · 1987 · 1988Competition recordSilver medal · Gold medalRTRayko TchalkovBulgariaIMO1996 · 1997Teva PharmaceuticalsAssoc Dir IT Business ApplicationIndexed profile
Ray LiUnited States of AmericaIMO2013Santa Clara UniversityAssistant Professor of Computer ScienceAutumn profileRLRay LiAustraliaIOI2013 · 2014Competition recordSilver medalRCRaymond ChristopherIndonesiaIMO2007Competition recordSilver medalRCRaymond Christopher TantoIndonesiaIMO2024 · 2025Grinding OSNProblem SetterIndexed profileRKRaymond Kang Seng IngSingaporeIOI2009 · 2010 · 2011Competition recordBronze medal · Gold medalRvRaymond van BommelNetherlandsIOI2009University of SydneyVisiting ResearcherIndexed profileRvRaymond van BommelNetherlandsIMO2008 · 2009Competition recordBronze medalRSRay ShiNew ZealandIMO2025Competition recordBronze medalRDRaz DvoraIsraelIMO2024 · 2025Competition recordSilver medal · Gold medalRTRaziman Thottungal ValapuIndiaIOI2007Competition recordSilver medalRNRaz NaotIsraelIMO1986Competition recordBronze medalRGRăzvan GelcaRomaniaIMO1985Competition recordGold medalIndexed profileRIRazvan IagarRomaniaIMO2001Competition recordBronze medalIndexed profileRHRazzi Hasan MasroorPakistanIMO2024Competition recordSilver medalRBR. BatdelgerMongoliaIMO1984Competition recordSilver medalRPRebecca PalmerUnited KingdomIMO1999Competition recordBronze medal
Rebecca StaffasSwedenIMO2010 · 2011NetlightSenior Manager (Consultant)Autumn profileRHRedi HaderiAlbaniaIMO2007Ankara Yıldırım Beyazıt UniversityLecturer, MathematicsAutumn profileRKReed KellyUnited States of AmericaIMO1975 · 1976Competition recordBronze medalRNRegas NeophytonCyprusIMO1989izidocsCo-founder and DirectorIndexed profileRPRégis Prado BarbosaBrazilIMO2006 · 2007 · 2008Competition recordBronze medal · Silver medalRBReid BartonUnited States of AmericaIOI2000 · 2001Competition recordGold medal
Reid BartonUnited States of AmericaIMO1998 · 1999 · 2000 · 2001Carnegie Mellon UniversityPostdoctoral researcher (mathematics); mathlib maintainerAutumn profileRDRei DunjaAlbaniaIMO2017ELBCOEnergy ConsultantIndexed profileRKRei KarashimaJapanIOI2026Competition recordGold medalRPReinaldo Penharrubia FagundesBrazilIMO1993 · 1994Competition recordHonourable mention · Silver medalAutumn profileRSReinardus Surya PradhityaIndonesiaIOI2008 · 2009FacebookSenior Software EngineerIndexed profileRZReiner ZornGermanyIMO1979Forschungszentrum JülichResearcherIndexed profileRGReinhard GruberAustriaIMO1997Silhouette GroupHead of HR OperationsIndexed profileRHReinhard HöppnerGerman Democratic RepublicIMO1966 · 1967Competition recordSilver medal · Gold medalRSReinhard SchusterGerman Democratic RepublicIMO1973 · 1974Competition recordBronze medalRSReinhard StixAustriaIMO1975Competition recordBronze medalRWReinhard WobstGerman Democratic RepublicIMO1971Competition recordBronze medalRSReinier SchmiermannNetherlandsIMO2016Competition recordHonourable mentionRCReinis CirponsLatviaIMO2016 · 2017Competition recordHonourable mentionIndexed profileRMRelja MedićCroatiaIOI2007NotchSoftware EngineerIndexed profileRDRémi De Joannis De VerclosFranceIMO2008Competition recordBronze medalRJRemigijus JodelisLithuaniaIMO1995ToptalPrincipal EngineerIndexed profile