All medalists.
IMO & IOI, including honourable mentions.
DRDanylo RadchenkoUkraineIMO2006 · 2007Competition recordBronze medal · Gold medal
Dao-Yun PengTaiwanIOI2018Kronos ResearchSummer Analyst (2021 internship)Autumn profileDGDaria GrekovaIOI2024 · 2025Competition recordGold medal · Silver medalDLDaria LobasUkraineIOI2026Competition recordHonourable mentionDPDaria PerekopskaUkraineIOI2025 · 2026Competition recordBronze medal · Silver medalIndexed profileDLDarien LefkowitzUnited States of AmericaIMO1986Competition recordSilver medalDGDarij GrinbergGermanyIMO2004 · 2005 · 2006Drexel UniversityAssistant ProfessorIndexed profileDADario AscariItalyIMO2013 · 2014Competition recordGold medalIndexed profileDCDario CazzaroItalyIOI2004Stream OceanChief Technology OfficerIndexed profileDMDarío Martínez RamírezSpainIMO2022 · 2023Competition recordBronze medalDMDarío Martínez RamírezSpainIOI2022 · 2023Competition recordHonourable mention · Bronze medalIndexed profileDMDario MonroyColombiaIMO1994Competition recordSilver medalDNDario NieuwenhuisSpainIOI2010 · 2011 · 2012AkilesCo-founder and CTOIndexed profile
Dario RancatiItalyIMO2014Institute of Science and Technology AustriaResearch FellowAutumn profileDRDario RobakArgentinaIOI1990GlobantCTO | Financial Services AI StudioIndexed profileDSDario SaccavinoItalyIMO1999 · 2000Amazon Web Services (AWS)Software Development EngineerIndexed profileDMDarko MarinovYugoslaviaIOI1991University of Illinois Urbana-ChampaignProfessorIndexed profileDMDarko MarinovYugoslaviaIMO1991University of Illinois Urbana-ChampaignProfessorIndexed profile
Darko VelkoskiNorth MacedoniaIMO2004SAPAI Developer ExpertAutumn profileDGDarragh GlynnIrelandIMO2017Competition recordHonourable mentionDCDarren Chung Lee OngMalaysiaIMO2002 · 2004Xiamen University MalaysiaProfessor of MathematicsIndexed profileDPDarrin PetkovBulgariaIOI1994 · 1995Competition recordSilver medal · Gold medalDSDarryl ShpakCanadaIOI1996 · 1997Conquest PlanningDirector, Application ArchitectureIndexed profileDODarwin Omar GutierrezHondurasIMO2008INSEP Infraestructura & Servicios PublicosDirector of Information TechnologyIndexed profileDSDarya ShchedrinaUkraineIMO2009Competition recordBronze medalDTDarya TyeplovaUkraineIMO2010Competition recordBronze medalDLDaryl Lee Ker RuMalaysiaIMO2024 · 2025Competition recordBronze medalDKDaryna KarpenkoUkraineIOI2022 · 2023Competition recordBronze medal
Dasco GabrielIndonesiaIOI2020ShopeeAutumn profileDGDashdorjiin GanzorigMongoliaIMO1991Competition recordHonourable mentionDEDashhuugiin ErdeneMongoliaIMO1991Competition recordHonourable mentionDNDat NguyenVietnamIOI2008Money Forward Vietnam Co., LtdPrincipal Software EngineerIndexed profileDVDat VuVietnamIOI2012Competition recordSilver medalDZDaulet ZhanguzinKazakhstanIMO2006Competition recordBronze medalIndexed profile
Daumilas ArdickasLithuaniaIMO2004 · 2005 · 2006Web RobotsProgrammerAutumn profileDADaumilas ArdickasLithuaniaIOI2005 · 2006TrafiIndexed profileDADauren AuzhaniKazakhstanIMO2003Eurasian Resources GroupHead of Analysis and Valuation of Investment ProjectsAutumn profileDBDauzhan BeketovKazakhstanIOI2025Competition recordBronze medal
Davi Cavalcanti SenaBrazilIMO2017MicrosoftSoftware EngineerAutumn profileDADavid Adam ChalcraftUnited KingdomIMO1982Competition recordBronze medalDADavid AldousUnited KingdomIMO1969Competition recordSilver medalDADavid Alfaya SánchezSpainIMO2008Competition recordHonourable mentionDADavid-Andrei AnghelRomaniaIMO2021 · 2022 · 2023 · 2024Competition recordSilver medal · Gold medalIndexed profileDADavid ArthurCanadaIOI1998 · 1999 · 2000Competition recordBronze medal · Gold medalDADavid ArthurCanadaIMO1999 · 2000Competition recordBronze medal · Gold medalDADavid AshCanadaIMO1981Competition recordGold medalDADavid AverbahGermanyIMO2025Competition recordBronze medalDBDavid BarrAustraliaIOI2003Competition recordBronze medalDBDavid BartonUnited States of AmericaIMO1974Competition recordSilver medalDBDavid B. CarltonUnited States of AmericaIMO1989Competition recordBronze medalDBDavid Benedikt LindenthalGermanyIMO2025Competition recordSilver medalDBDavid BenjaminUnited States of AmericaIOI2007 · 2008Competition recordBronze medal · Gold medalDBDavid BernsteinUnion of Soviet Socialist RepublicsIMO1964Competition recordGold medalDBDavid BroodrykSouth AfricaIOI2017Competition recordBronze medalDBDavid Buchmaier BofillAustriaIMO2023Competition recordHonourable mentionDBDavid BurburanAustraliaIOI2001Competition recordBronze medalDBDavid ButlerSouth AfricaIOI1992Competition recordSilver medalDCDavid ChalmersAustraliaIMO1982Competition recordBronze medalDCDavid ChanAustraliaIMO2001 · 2002Competition recordBronze medal · Silver medalDCDavid CheikhiFranceIOI2014Columbia UniversityPhD Candidate in Operations ResearchAutumn profile
Dao-Yun PengTaiwanIOI2018Kronos ResearchSummer Analyst (2021 internship)Autumn profileDGDaria GrekovaIOI2024 · 2025Competition recordGold medal · Silver medalDLDaria LobasUkraineIOI2026Competition recordHonourable mentionDPDaria PerekopskaUkraineIOI2025 · 2026Competition recordBronze medal · Silver medalIndexed profileDLDarien LefkowitzUnited States of AmericaIMO1986Competition recordSilver medalDGDarij GrinbergGermanyIMO2004 · 2005 · 2006Drexel UniversityAssistant ProfessorIndexed profileDADario AscariItalyIMO2013 · 2014Competition recordGold medalIndexed profileDCDario CazzaroItalyIOI2004Stream OceanChief Technology OfficerIndexed profileDMDarío Martínez RamírezSpainIMO2022 · 2023Competition recordBronze medalDMDarío Martínez RamírezSpainIOI2022 · 2023Competition recordHonourable mention · Bronze medalIndexed profileDMDario MonroyColombiaIMO1994Competition recordSilver medalDNDario NieuwenhuisSpainIOI2010 · 2011 · 2012AkilesCo-founder and CTOIndexed profileDario RancatiItalyIMO2014Institute of Science and Technology AustriaResearch FellowAutumn profileDRDario RobakArgentinaIOI1990GlobantCTO | Financial Services AI StudioIndexed profileDSDario SaccavinoItalyIMO1999 · 2000Amazon Web Services (AWS)Software Development EngineerIndexed profileDMDarko MarinovYugoslaviaIOI1991University of Illinois Urbana-ChampaignProfessorIndexed profileDMDarko MarinovYugoslaviaIMO1991University of Illinois Urbana-ChampaignProfessorIndexed profileDarko VelkoskiNorth MacedoniaIMO2004SAPAI Developer ExpertAutumn profileDGDarragh GlynnIrelandIMO2017Competition recordHonourable mentionDCDarren Chung Lee OngMalaysiaIMO2002 · 2004Xiamen University MalaysiaProfessor of MathematicsIndexed profileDPDarrin PetkovBulgariaIOI1994 · 1995Competition recordSilver medal · Gold medalDSDarryl ShpakCanadaIOI1996 · 1997Conquest PlanningDirector, Application ArchitectureIndexed profileDODarwin Omar GutierrezHondurasIMO2008INSEP Infraestructura & Servicios PublicosDirector of Information TechnologyIndexed profileDSDarya ShchedrinaUkraineIMO2009Competition recordBronze medalDTDarya TyeplovaUkraineIMO2010Competition recordBronze medalDLDaryl Lee Ker RuMalaysiaIMO2024 · 2025Competition recordBronze medalDKDaryna KarpenkoUkraineIOI2022 · 2023Competition recordBronze medalDasco GabrielIndonesiaIOI2020ShopeeAutumn profileDGDashdorjiin GanzorigMongoliaIMO1991Competition recordHonourable mentionDEDashhuugiin ErdeneMongoliaIMO1991Competition recordHonourable mentionDNDat NguyenVietnamIOI2008Money Forward Vietnam Co., LtdPrincipal Software EngineerIndexed profileDVDat VuVietnamIOI2012Competition recordSilver medalDZDaulet ZhanguzinKazakhstanIMO2006Competition recordBronze medalIndexed profileDaumilas ArdickasLithuaniaIMO2004 · 2005 · 2006Web RobotsProgrammerAutumn profileDADaumilas ArdickasLithuaniaIOI2005 · 2006TrafiIndexed profileDADauren AuzhaniKazakhstanIMO2003Eurasian Resources GroupHead of Analysis and Valuation of Investment ProjectsAutumn profileDBDauzhan BeketovKazakhstanIOI2025Competition recordBronze medalDavi Cavalcanti SenaBrazilIMO2017MicrosoftSoftware EngineerAutumn profileDADavid Adam ChalcraftUnited KingdomIMO1982Competition recordBronze medalDADavid AldousUnited KingdomIMO1969Competition recordSilver medalDADavid Alfaya SánchezSpainIMO2008Competition recordHonourable mentionDADavid-Andrei AnghelRomaniaIMO2021 · 2022 · 2023 · 2024Competition recordSilver medal · Gold medalIndexed profileDADavid ArthurCanadaIOI1998 · 1999 · 2000Competition recordBronze medal · Gold medalDADavid ArthurCanadaIMO1999 · 2000Competition recordBronze medal · Gold medalDADavid AshCanadaIMO1981Competition recordGold medalDADavid AverbahGermanyIMO2025Competition recordBronze medalDBDavid BarrAustraliaIOI2003Competition recordBronze medalDBDavid BartonUnited States of AmericaIMO1974Competition recordSilver medalDBDavid B. CarltonUnited States of AmericaIMO1989Competition recordBronze medalDBDavid Benedikt LindenthalGermanyIMO2025Competition recordSilver medalDBDavid BenjaminUnited States of AmericaIOI2007 · 2008Competition recordBronze medal · Gold medalDBDavid BernsteinUnion of Soviet Socialist RepublicsIMO1964Competition recordGold medalDBDavid BroodrykSouth AfricaIOI2017Competition recordBronze medalDBDavid Buchmaier BofillAustriaIMO2023Competition recordHonourable mentionDBDavid BurburanAustraliaIOI2001Competition recordBronze medalDBDavid ButlerSouth AfricaIOI1992Competition recordSilver medalDCDavid ChalmersAustraliaIMO1982Competition recordBronze medalDCDavid ChanAustraliaIMO2001 · 2002Competition recordBronze medal · Silver medalDCDavid CheikhiFranceIOI2014Columbia UniversityPhD Candidate in Operations ResearchAutumn profile