All medalists.
IMO & IOI, including honourable mentions.
KSKiryl ShyrmaBelarusIOI2019YandexSenior Software EngineerIndexed profileKSKisara Sandaluka KodithuwakkuSri LankaIMO2019CML InsightMachine Learning Engineering InternIndexed profileKSKitisak SrinarupatThailandIMO1994FAS Consulting ServicesDirectorIndexed profileKPKlaas ParmentierBelgiumIMO2014University of CambridgeResearch AssociateIndexed profileKFKlára FickováSlovakiaIMO2012Competition recordHonourable mentionKMKlas MårtenssonSwedenIMO1968Competition recordBronze medalKAKlaus AltmannGerman Democratic RepublicIMO1974 · 1975FU-BerlinProfessorIndexed profileKBKlaus BrinckmannGerman Democratic RepublicIMO1976Agena BioscienceRegional Sales ManagerIndexed profileKMKlaus MohnkeGerman Democratic RepublicIMO1983Competition recordBronze medalIndexed profileKNKlaus NeumannGerman Democratic RepublicIMO1969Loughborough UniversityphysicistIndexed profileKWKlaus WalterGerman Democratic RepublicIMO1960Competition recordHonourable mentionKŠKlemen ŠivicSloveniaIMO2000 · 2002Competition recordHonourable mention · Bronze medalKŽKlemen ŽagarSloveniaIOI1995Competition recordBronze medalKLKlevis LiperiAlbaniaIMO2020 · 2022MercorMathematical Prompt EngineerIndexed profileKYKlevis YmeriAlbaniaIMO2006 · 2007Competition recordHonourable mentionKSKliment SerafimovNorth MacedoniaIOI2014MetaHyperFounderIndexed profileKZKlymentii ZolotarovUkraineIMO2021noneIndexed profileKZKlymentii ZolotarovUkraineIMO2020noneIndexed profileKAKo AokiJapanIMO2015 · 2016NTT DOCOMO, Inc.Chief, Business Planning and Development, Yamanashi, JPIndexed profileKYKobina Yarko MensahGhanaIMO2026Competition recordHonourable mentionKGKoen GoossensBelgiumIMO2000Competition recordBronze medal
Koen StruyveBelgiumIMO2002Impossible CloudSoftware EngineerAutumn profileKWKoen WoltersNetherlandsIOI2013Competition recordSilver medalKBKoh Beng LiangSingaporeIOI1993 · 1994GetGo CarsharingLead Software Engineer (Systems)Indexed profileKLKohji LiuJapanIOI2012 · 2013Competition recordSilver medalIndexed profileKPKoh Pang WeiSingaporeIOI2006Microsoft AIMember of Technical StaffIndexed profileKIKohta IsetoJapanIMO2025Competition recordBronze medalKZKoh Zi ChunSingaporeIOI2006GoogleSoftware EngineerIndexed profileKNKoichi NamekataJapanIOI2018 · 2019EyelineResearch InternIndexed profileKKKoichiro KobayashiJapanIMO2021Competition recordBronze medalIndexed profileKOKoi On IeongMacauIMO2011 · 2012Competition recordHonourable mentionKIKokoro IkedaJapanIMO1993Competition recordBronze medalKCKok-Wui CheongSingaporeIMO1988Competition recordBronze medalKAKomron AbdulloevTajikistanIMO2017FynexAIChief Executive OfficerIndexed profileKGKomron GiesievTajikistanIMO2009 · 2010 · 2011Competition recordBronze medal · Honourable mentionKHKong Hong HoiMacauIMO1994Competition recordSilver medalKEKonrad EngelGerman Democratic RepublicIMO1974Competition recordSilver medal
Konrad Jan PaluszekPolandIMO2013 · 2015Second FoundationQuantitative Research AnalystAutumn profileKonrad PaluszekPolandIOI2015Second FoundationQuantitative Research AnalystAutumn profileKPKonrad PatkowskiPolandIMO1994Competition recordBronze medalKPKonrad PilchAustraliaIMO2005 · 2006Blackrock NeurotechSoftware EngineerAutumn profileKPKonrad PiwakowskiPolandIMO1985Competition recordBronze medalKKKonstantine KokaseUnion of Soviet Socialist RepublicsIMO1983Competition recordBronze medalKGKonstantin GarovBulgariaIMO2017 · 2018UC San DiegoPhD Student in Computer ScienceAutumn profileKIKonstantin IgnatievUnion of Soviet Socialist RepublicsIMO1984AvayaSenior Software EngineerIndexed profile
Konstantin LopyrevCanadaIOI2007GoogleSenior Staff Software Engineer, Tech Lead / ManagerAutumn profileKMKonstantin MatveevUnion of Soviet Socialist RepublicsIMO1982Competition recordGold medalKMKonstantin MatveevRussian FederationIMO2007Competition recordGold medalKBKonstantinos BrazitikosGreeceIMO2010Competition recordHonourable mentionIndexed profileKCKonstantinos CharalampousCyprusIMO2022Competition recordHonourable mentionKKKonstantinos KonstantinidisGreeceIMO2022 · 2023Competition recordHonourable mentionIndexed profileKPKonstantinos PsychasGreeceIMO2006Amazon Web Services (AWS)AWS Security Software Development EngineerIndexed profileKRKonstantinos RokasGreeceIMO1997Competition recordHonourable mentionKSKonstantinos StavropoulosGreeceIMO2000AUSTRIACARD HOLDINGSProduct ManagementIndexed profileKTKonstantinos TsinasGreeceIMO2012 · 2013XPLAINcommunity managerIndexed profileKSKonstantin SalikhovRussian FederationIMO1996YandexDevelopment Team LeadIndexed profileKSKonstantin SemenovRussiaIOI2013 · 2014Competition recordGold medal · Silver medalKHKonstantīns HamiduļļinsLatviaIOI2000Competition recordBronze medalKSKonstantin SokolBelarusIOI2013Competition recordSilver medalKSKonstantin SturkasUnion of Soviet Socialist RepublicsIMO1987Competition recordSilver medal
Koen StruyveBelgiumIMO2002Impossible CloudSoftware EngineerAutumn profileKWKoen WoltersNetherlandsIOI2013Competition recordSilver medalKBKoh Beng LiangSingaporeIOI1993 · 1994GetGo CarsharingLead Software Engineer (Systems)Indexed profileKLKohji LiuJapanIOI2012 · 2013Competition recordSilver medalIndexed profileKPKoh Pang WeiSingaporeIOI2006Microsoft AIMember of Technical StaffIndexed profileKIKohta IsetoJapanIMO2025Competition recordBronze medalKZKoh Zi ChunSingaporeIOI2006GoogleSoftware EngineerIndexed profileKNKoichi NamekataJapanIOI2018 · 2019EyelineResearch InternIndexed profileKKKoichiro KobayashiJapanIMO2021Competition recordBronze medalIndexed profileKOKoi On IeongMacauIMO2011 · 2012Competition recordHonourable mentionKIKokoro IkedaJapanIMO1993Competition recordBronze medalKCKok-Wui CheongSingaporeIMO1988Competition recordBronze medalKAKomron AbdulloevTajikistanIMO2017FynexAIChief Executive OfficerIndexed profileKGKomron GiesievTajikistanIMO2009 · 2010 · 2011Competition recordBronze medal · Honourable mentionKHKong Hong HoiMacauIMO1994Competition recordSilver medalKEKonrad EngelGerman Democratic RepublicIMO1974Competition recordSilver medalKonrad Jan PaluszekPolandIMO2013 · 2015Second FoundationQuantitative Research AnalystAutumn profileKonrad PaluszekPolandIOI2015Second FoundationQuantitative Research AnalystAutumn profileKPKonrad PatkowskiPolandIMO1994Competition recordBronze medalKPKonrad PilchAustraliaIMO2005 · 2006Blackrock NeurotechSoftware EngineerAutumn profileKPKonrad PiwakowskiPolandIMO1985Competition recordBronze medalKKKonstantine KokaseUnion of Soviet Socialist RepublicsIMO1983Competition recordBronze medalKGKonstantin GarovBulgariaIMO2017 · 2018UC San DiegoPhD Student in Computer ScienceAutumn profileKIKonstantin IgnatievUnion of Soviet Socialist RepublicsIMO1984AvayaSenior Software EngineerIndexed profileKonstantin LopyrevCanadaIOI2007GoogleSenior Staff Software Engineer, Tech Lead / ManagerAutumn profileKMKonstantin MatveevUnion of Soviet Socialist RepublicsIMO1982Competition recordGold medalKMKonstantin MatveevRussian FederationIMO2007Competition recordGold medalKBKonstantinos BrazitikosGreeceIMO2010Competition recordHonourable mentionIndexed profileKCKonstantinos CharalampousCyprusIMO2022Competition recordHonourable mentionKKKonstantinos KonstantinidisGreeceIMO2022 · 2023Competition recordHonourable mentionIndexed profileKPKonstantinos PsychasGreeceIMO2006Amazon Web Services (AWS)AWS Security Software Development EngineerIndexed profileKRKonstantinos RokasGreeceIMO1997Competition recordHonourable mentionKSKonstantinos StavropoulosGreeceIMO2000AUSTRIACARD HOLDINGSProduct ManagementIndexed profileKTKonstantinos TsinasGreeceIMO2012 · 2013XPLAINcommunity managerIndexed profileKSKonstantin SalikhovRussian FederationIMO1996YandexDevelopment Team LeadIndexed profileKSKonstantin SemenovRussiaIOI2013 · 2014Competition recordGold medal · Silver medalKHKonstantīns HamiduļļinsLatviaIOI2000Competition recordBronze medalKSKonstantin SokolBelarusIOI2013Competition recordSilver medalKSKonstantin SturkasUnion of Soviet Socialist RepublicsIMO1987Competition recordSilver medal