Fundraising Fox
The Y Combinator Mafia
10,657 people came through Y Combinator and went on to found or lead other companies.
Oliver JohnsonYC Fall 2026Founded SinterJustin KwonYC Fall 2026Founded SinterAnton HantelF26 BatchFounded Sona8Madeleine MalmstenYC Fall 2026Founded Sona8Thilo TammeF26Founded Sona8Maya NayyarYC Fall 2026Founded FrontrunnerCarl BagerYC Fall 2026Founded FrontrunnerChristian VestergaardYC Fall 2026Founded The Agentic Data Co.Matias Voldby DrejerYC Fall 2026Founded The Agentic Data Co.Slavko KovačevićEntrepreneurship/Entrepreneurial StudiesFounded DeepMarkKosta PavlovićYC Fall 2026Founded DeepMarkShilpi NayakYC Winter 2022Founded goodfinBenny KokYC Summer 2024Founded Comfy DeployCorey HulenYC Summer 2012Founded MattermostDiego Villarreal MeyerYC Summer 2022Founded RoxelsRichard SuthYC Summer 2016Founded OneChronosJames da CostaYC Summer 2021Founded Fingo AfricaJoe WildingYC Winter 2016Founded Boom SupersonicElaine CheungYC Summer 2020Founded DepictMOHIT KUMARYC Winter 2021Founded BusinessOnBotCatherine JeongYC Spring 2025Founded NODI EnergyAlessandro HammondYC Fall 2026Founded Nxtcure LabsKeanu ClarkYC Fall 2026Founded Nxtcure LabsCody OsborneYC Fall 2026Founded RomaVishnu KrishnaprasadYC Fall 2026Founded Agent 37Rohit NarasYC Fall 2026Founded Applied KineticsAdhik DurgaYC Fall 2026Founded Applied KineticsAlex LissoYC Fall 2026Founded Inflection Space SystemsMatt HanleyYC Fall 2026Founded Inflection Space SystemsKush AgarwalYC Fall 2026Founded AviernArvin SinghYC Fall 2026Founded AviernAshten AkemotoYC Fall 2026Founded MicoraFrederik (Fredy) MareelsYC F26Founded MicoraBrian JoseffYC Fall 2026Founded RiverChandler SuppleYC Fall 2026Founded RiverHemant MahendruYC Fall 2026Founded twentyfour26Sam MathewYC Fall 2026Founded twentyfour26Caleb PongF26Founded VyraSulan ZhangFall 2026Founded VyraMacy ModyYC Fall 2026Founded PapayaNiyaz PuzhikkunnathYC Fall 2026Founded PapayaFaiz VadakkumpadathYC Fall 2026Founded PapayaPoorva DixitYC Fall 2026Founded Perit.AINikhil KrishnaswamyYC Summer 2027Founded MemorableAdvaiyt SaneYC Summer 2027Founded MemorableArman LuthraYC Fall 2026Founded TilionMd Shahrier Islam ArhamYC Fall 2026Founded TilionKazi Fardinul HoqueYC Fall 2026Founded TilionAbdul Basit TonmoyYC Fall 2026Founded TilionMichael WangYC Fall 2026Founded LarkAlfonso Márquez de la PlataYC Fall 2026Founded SintropixBorja Marquez de la PlataYC Fall 2026Founded SintropixJeff HaraYC Winter 2024Founded JustAIChris KolenatyYC Winter 2024Founded Andy AIJosep NollaYC Summer 2020Founded DepictJuan Sebastián CadavidYC Winter 2017Founded HogaruJonni LundyYC Winter 2023Founded ResendJulian RiosY Combinator AlumFounded EdenSpencer HewettYC Winter 2013Founded RADARIshaan GulrajaniYC Summer 2013Founded WatchsendPanashe MahachiYC Summer 2016Founded Scanate/FellowDaria EvdokimovaYC Winter 2017Founded VoiceopsMark ProkoudineFounded YoutoozTapa GhoshW18 BatchFounded VolantisMatthew DiMarcantonioFounded ZeitgeistPhillip ChaoYC Winter 2019Founded DopplerTieshun RoquerreYC Winter 2016Founded StrongIntroKiara NirghinYC Winter 2023Founded ChimaFelipe MenesesZippi (S19)Founded HyperplaneElias FizesanYC Summer 2012Founded Canopy LabsMax ForseyYC Winter 2023Founded SamedayShubham SharmaYC Fall 2026Founded Kailash LabsDatta KaligotlaYC Fall 2026Founded FaradayOscar RangelYC Fall 2026Founded FaradayMathilde BOUILLOUXYC Fall 2026Founded Viraj AeroJacob ShenYC Fall 2026Founded Rhem LabsKevin MiaoYC Fall 2026Founded BryelFrankie LiYC Fall 2026Founded BryelHarpreet DhaliwalYC Fall 2026Founded TrueMileYogesh GorjillaYC Fall 2026Founded ElimentaryMannat SainiYC Fall 2026Founded ElimentaryManoj SardaYC Fall 2026Founded ElimentaryWill WashburnYC Fall 2026Founded Agent RelayKhaliq GantYC Fall 2026Founded Agent RelayJoseph PerrottaYC Fall 2026Founded InvertixJon FacerYC Fall 2026Founded Open ActuationGabriel PorajYC Fall 2026Founded Streamline SystemsCharlie JessettYC Fall 2026Founded Streamline SystemsCameron KupermanYC Fall 2026Founded Shire IntelligenceHarshith GuduruYC Fall 2026Founded Shire IntelligenceAlex TabakuYC Fall 2026Founded Shire IntelligenceTristan LecourtoisYC Fall 2026Founded AsimAkshat MittalYC Fall 2026Founded Volaren Inc.Martin PestanaYC Fall 2026Founded Volaren Inc.Nick SomanYC Fall 2026Founded DecentAndrew BudkerYC Fall 2026Founded Decent
Frequently asked questions
- What is the Y Combinator mafia?
- The Y Combinator mafia is the network of 10,657 people who came through Y Combinator and went on to found or lead other companies, including Sinter, Sona8, Frontrunner, The Agentic Data Co., DeepMark.
- Who is in the Y Combinator mafia?
- Notable members include Oliver Johnson (Sinter), Justin Kwon (Sinter), Anton Hantel (Sona8), Madeleine Malmsten (Sona8), Thilo Tamme (Sona8), Maya Nayyar (Frontrunner), Carl Bager (Frontrunner), Christian Vestergaard (The Agentic Data Co.), among 10,657 tracked members.
- What companies did Y Combinator alumni found?
- Companies founded by Y Combinator alumni include Sinter, Sona8, Frontrunner, The Agentic Data Co., DeepMark, goodfin, Comfy Deploy, Mattermost, Roxels, OneChronos.