All medalists.
IMO & IOI, including honourable mentions.
JSJohn ScholesUnited KingdomIMO1968n/aself-employedIndexed profileJSJohn SegalUnited KingdomIMO1970Giles Wilson LawCommercial Property LawyerIndexed profileJSJohn SteinkeUnited States of AmericaIMO1983Competition recordBronze medalJSJohn SullivanUnited KingdomIOI1992Competition recordSilver medalJWJohn WooUnited States of AmericaIMO1987 · 1988Competition recordSilver medal
John (Zhiyao) MaCanadaIMO2013AnthropicMember of Technical StaffAutumn profile
Jokūbas JasiūnasLithuaniaIMO2023VNT TechnologiesStudentAutumn profileJOJonah OsterwalderSwitzerlandIMO2023Competition recordBronze medalJBJonas BygrenSwedenIMO1987Competition recordSilver medalJDJonas De SchouwerBelgiumIMO2019 · 2020ReluIndexed profileJHJonáš HavelkaCzech RepublicIMO2020Competition recordBronze medalJHJonáš HavelkaCzech RepublicIOI2020Stealth AI safety startupManažer softwarového inženýringuIndexed profileJKJonas KubiliusLithuaniaIMO2002VU Life Sciences CenterSenior ResearcherIndexed profileJOJonas OlssonSwedenIOI2011Competition recordBronze medalJPJonas PauliukevičiusLithuaniaIMO2008MewsSenior Software EngineerIndexed profileJPJonas PukštaLithuaniaIOI2016SensmetryR&D Engineer (Software)Indexed profileJPJonas PukštaLithuaniaIMO2014 · 2015 · 2016 · 2017SensmetryR&D Engineer (Software)Indexed profileJŠJonas ŠukysLithuaniaIMO2006VAS Transport UABTruck DriverIndexed profileJWJonas WalterGermanyIMO2017 · 2018 · 2019University of BonnMaster's student in MathematicsAutumn profileJAJonathan Aldric ChuaPhilippinesIMO2007Competition recordHonourable mentionJBJONATHAN BENONI MUKALAZIUgandaIMO2022Math-upCo-FounderIndexed profile
Jonathan Christian NitisastroIndonesiaIMO2019 · 2020SnowflakeSoftware EngineerAutumn profileJDJonathan DongFranceIMO2011EPFLPrincipal Investigator (SNF Ambizione Fellow)Indexed profileJEJonathan EdwardsUnited KingdomIMO1970Competition recordBronze medalJGJonathan GalIsraelIOI2015MobileyeSoftware EngineerIndexed profileJGJonathan GilbertCanadaIOI2000Competition recordBronze medalJHJonathan HeUnited States of AmericaIOI2026Jane StreetSoftware Engineer InternIndexed profile
Jonathan Irvin GunawanIndonesiaIOI2012 · 2013MetaSoftware EngineerAutumn profileJJJonathan James HitchcockUnited KingdomIMO1975 · 1976THE CANTERBURY ACADEMYDirector of Teaching and Learning for ScienceIndexed profileJKJonathan KhooNew ZealandIOI2015 · 2016Grinding Gear GamesProgrammerIndexed profileJKJonathan KusilekAustraliaIMO1997Competition recordBronze medalJLJonathan LeeUnited KingdomIMO2006Competition recordSilver medalJMJonathan Montano MartinezColombiaIMO2003 · 2004Competition recordHonourable mention · Bronze medalJMJonathan MosheiffIsraelIOI2003 · 2004 · 2005Competition recordSilver medalIndexed profileJMJonathan Muganzi NgabiranoUgandaIMO2020Competition recordHonourable mentionJMJonathan Mulyawan WoenardiIndonesiaIMO2014 · 2015National University of SingaporeIndexed profileJPJonathan PetersIrelandIMO2012Competition recordHonourable mentionJRJonathan Ramírez FlorentínParaguayIMO2013Competition recordHonourable mentionJRJonathan Rodriguez FigueroaPuerto RicoIMO2017CooperVisionProcess Automation EngineerIndexed profileJTJonathan Tilling NiemannDenmarkIMO2017DTU ComputePhD studentIndexed profileJTJonathan Timur SchneiderCanadaIMO2008 · 2009Competition recordSilver medal · Bronze medalJVJonathan Valverde LizanoCosta RicaIMO2010Competition recordHonourable mentionIndexed profileJWJonathan WeinsteinUnited States of AmericaIMO1994Competition recordGold medalJZJonathan ZhengAustraliaIMO2013Georgia Institute of TechnologyIndexed profile
Jonathan ZungCanadaIMO2010Georgia Institute of TechnologyAssistant ProfessorAutumn profile
Jonathon SunNew ZealandIOI2023Jane StreetAutumn profileJBJon Bradley SmitSouth AfricaIMO2004Competition recordSilver medalJCJong Chol KimDemocratic People's Republic of KoreaIMO2009Competition recordGold medalJHJong Hyuk LeeRepublic of KoreaIOI2007Competition recordBronze medalJHJong Hyun LeeRepublic of KoreaIOI1992Competition recordSilver medalJHJong Hyun ShinRepublic of KoreaIMO1991Competition recordHonourable mention
Jongmin LimAustraliaIMO2016Australian Maths TrustLecturerAutumn profileJLJongwon LeeRepublic of KoreaIMO2013Competition recordGold medalJWJong Won ParkRepublic of KoreaIMO1991 · 1992Competition recordBronze medal · Gold medalJRJongyol RiDemocratic People's Republic of KoreaIMO2013Competition recordSilver medalJYJong Yol RiDemocratic People's Republic of KoreaIMO2014 · 2015 · 2016Competition recordSilver medal
Jon Henri A. MaPhilippinesIMO2005ChinabankBusiness Support OfficerAutumn profileJTJoni TeräväinenFinlandIMO2012F9 Distribution OySolution Sales SpecialistIndexed profileJRJon-Magnus RosenbladNorwayIOI2019Nasjonal sikkerhetsmyndighetIndexed profileJHJonni HaapiainenFinlandIOI2023 · 2024Competition recordBronze medal · Silver medal
John (Zhiyao) MaCanadaIMO2013AnthropicMember of Technical StaffAutumn profileJokūbas JasiūnasLithuaniaIMO2023VNT TechnologiesStudentAutumn profileJOJonah OsterwalderSwitzerlandIMO2023Competition recordBronze medalJBJonas BygrenSwedenIMO1987Competition recordSilver medalJDJonas De SchouwerBelgiumIMO2019 · 2020ReluIndexed profileJHJonáš HavelkaCzech RepublicIMO2020Competition recordBronze medalJHJonáš HavelkaCzech RepublicIOI2020Stealth AI safety startupManažer softwarového inženýringuIndexed profileJKJonas KubiliusLithuaniaIMO2002VU Life Sciences CenterSenior ResearcherIndexed profileJOJonas OlssonSwedenIOI2011Competition recordBronze medalJPJonas PauliukevičiusLithuaniaIMO2008MewsSenior Software EngineerIndexed profileJPJonas PukštaLithuaniaIOI2016SensmetryR&D Engineer (Software)Indexed profileJPJonas PukštaLithuaniaIMO2014 · 2015 · 2016 · 2017SensmetryR&D Engineer (Software)Indexed profileJŠJonas ŠukysLithuaniaIMO2006VAS Transport UABTruck DriverIndexed profileJWJonas WalterGermanyIMO2017 · 2018 · 2019University of BonnMaster's student in MathematicsAutumn profileJAJonathan Aldric ChuaPhilippinesIMO2007Competition recordHonourable mentionJBJONATHAN BENONI MUKALAZIUgandaIMO2022Math-upCo-FounderIndexed profileJonathan Christian NitisastroIndonesiaIMO2019 · 2020SnowflakeSoftware EngineerAutumn profileJDJonathan DongFranceIMO2011EPFLPrincipal Investigator (SNF Ambizione Fellow)Indexed profileJEJonathan EdwardsUnited KingdomIMO1970Competition recordBronze medalJGJonathan GalIsraelIOI2015MobileyeSoftware EngineerIndexed profileJGJonathan GilbertCanadaIOI2000Competition recordBronze medalJHJonathan HeUnited States of AmericaIOI2026Jane StreetSoftware Engineer InternIndexed profileJonathan Irvin GunawanIndonesiaIOI2012 · 2013MetaSoftware EngineerAutumn profileJJJonathan James HitchcockUnited KingdomIMO1975 · 1976THE CANTERBURY ACADEMYDirector of Teaching and Learning for ScienceIndexed profileJKJonathan KhooNew ZealandIOI2015 · 2016Grinding Gear GamesProgrammerIndexed profileJKJonathan KusilekAustraliaIMO1997Competition recordBronze medalJLJonathan LeeUnited KingdomIMO2006Competition recordSilver medalJMJonathan Montano MartinezColombiaIMO2003 · 2004Competition recordHonourable mention · Bronze medalJMJonathan MosheiffIsraelIOI2003 · 2004 · 2005Competition recordSilver medalIndexed profileJMJonathan Muganzi NgabiranoUgandaIMO2020Competition recordHonourable mentionJMJonathan Mulyawan WoenardiIndonesiaIMO2014 · 2015National University of SingaporeIndexed profileJPJonathan PetersIrelandIMO2012Competition recordHonourable mentionJRJonathan Ramírez FlorentínParaguayIMO2013Competition recordHonourable mentionJRJonathan Rodriguez FigueroaPuerto RicoIMO2017CooperVisionProcess Automation EngineerIndexed profileJTJonathan Tilling NiemannDenmarkIMO2017DTU ComputePhD studentIndexed profileJTJonathan Timur SchneiderCanadaIMO2008 · 2009Competition recordSilver medal · Bronze medalJVJonathan Valverde LizanoCosta RicaIMO2010Competition recordHonourable mentionIndexed profileJWJonathan WeinsteinUnited States of AmericaIMO1994Competition recordGold medalJZJonathan ZhengAustraliaIMO2013Georgia Institute of TechnologyIndexed profileJonathan ZungCanadaIMO2010Georgia Institute of TechnologyAssistant ProfessorAutumn profileJonathon SunNew ZealandIOI2023Jane StreetAutumn profileJBJon Bradley SmitSouth AfricaIMO2004Competition recordSilver medalJCJong Chol KimDemocratic People's Republic of KoreaIMO2009Competition recordGold medalJHJong Hyuk LeeRepublic of KoreaIOI2007Competition recordBronze medalJHJong Hyun LeeRepublic of KoreaIOI1992Competition recordSilver medalJHJong Hyun ShinRepublic of KoreaIMO1991Competition recordHonourable mentionJongmin LimAustraliaIMO2016Australian Maths TrustLecturerAutumn profileJLJongwon LeeRepublic of KoreaIMO2013Competition recordGold medalJWJong Won ParkRepublic of KoreaIMO1991 · 1992Competition recordBronze medal · Gold medalJRJongyol RiDemocratic People's Republic of KoreaIMO2013Competition recordSilver medalJYJong Yol RiDemocratic People's Republic of KoreaIMO2014 · 2015 · 2016Competition recordSilver medalJon Henri A. MaPhilippinesIMO2005ChinabankBusiness Support OfficerAutumn profileJTJoni TeräväinenFinlandIMO2012F9 Distribution OySolution Sales SpecialistIndexed profileJRJon-Magnus RosenbladNorwayIOI2019Nasjonal sikkerhetsmyndighetIndexed profileJHJonni HaapiainenFinlandIOI2023 · 2024Competition recordBronze medal · Silver medal