Fundraising Fox
The Y Combinator Mafia
10,678 people came through Y Combinator and went on to found or lead other companies.
Humza AhmedF25Founded Automax.aiRichard WangYC Fall 2025Founded Clad LabsKevin LeYC Fall 2025Founded Clad LabsPhilip HoYC Fall 2025Founded AbsurdDaniel KatheinYC Fall 2025Founded AbsurdPrashant ShishodiaYC Fall 2025Founded Kalpa LabsGautam JhaYC Fall 2025Founded Kalpa LabsKarim (Wen) RahmeFounderFounded MetorialTobias HerberFounderFounded MetorialFelipe Jin LiF25Founded DenkiDavid Jin LiFall 2025Founded DenkiRagav SachdevaYC Spring 2026Founded TeaflaskRush SadiwalaYC Fall 2025Founded SavaHenry KwanF25 | Partner: Garry TanFounded IcarusPablo OmenacaYC Fall 2025Founded KarumiSamrath ChadhaYC Fall 2025Founded PerseusCole GawinYC Fall 2025Founded LemmaBen BrimacombeYC Fall 2025Founded ExonicChalmers BrownFall 2025Founded JarminShirsendu HalderF25Founded JarminZack LemanYC Fall 2025Founded JarminBram SchorkYC Winter 2026Founded General AstronauticsJacob WrightF25Founded MadeThisCambree BernkopfYC Fall 2025Founded MadeThisSantosh VallabhaneniYC Fall 2025Founded Rovi HealthTarun VallabhaneniF25Founded Rovi HealthZak SinghYC Fall 2025Founded MiniswapWill HannaYC Fall 2025Founded MiniswapLihong WangF25Founded Freeport MarketsBryan ReedF25 | Partner: Garry TanFounded Freeport MarketsSergio GarciaYC Fall 2025Founded Boom AIJose ToscanoYC Fall 2025Founded Boom AIShivani PatelYC Fall 2025Founded LayersHudson LiaoYC Fall 2025Founded The HogStephan KoenigstorferYC Fall 2025Founded LightberryAlisa WuF25Founded BlumaStephen NiYC Fall 2025Founded BlumaRobert CormicanYC Fall 2025Founded Forge RoboticsDeep KapurYC Fall 2025Founded AmeraLouise TanskiYC Fall 2025Founded AmeraFrederik HansenYC Fall 2025Founded DiligenceSquaredLucas MantovaniYC Fall 2025Founded VelvetLucas TuckerYC Fall 2025Founded VelvetGiuseppe RapisardaYC Fall 2025Founded AxialSuhail ParryYC Fall 2025Founded LunaBillDavid DayYC Fall 2025Founded LunaBillSaad JamalYC Fall 2025Founded AntigenAbdullah NaumanYC Fall 2025Founded AntigenMitch DuncombeLegal CounselFounded Vector LegalKeenan VenutiYC Winter 2026Founded Vector LegalDmitry FatkhiYC Fall 2025Founded FastshotElvira DzhuraevaYC Fall 2025Founded FastshotDominik HelmreichF25Founded Clicks HealthOliver KnappClicks (YC F25)Founded Clicks HealthRonan NoppYC Winter 2026Founded VoltairHayden GoschYC Winter 2026Founded VoltairAvi GotskindW26Founded VoltairWarren WeissbluthYC Winter 2026Founded VoltairKurush DubashYC Fall 2025Founded DomeKunal RoyYC Fall 2025Founded DomeChanhyung KimFounderFounded MarkItRoland SaavedraYC Fall 2025Founded MarkItVivan AgrawalF25Founded ZarnaHrishi JoshiF25Founded ZarnaRakesh MehtaF25Founded ZarnaSri Raghu MalireddiYC Fall 2025Founded MossHarsha NalluruYC Fall 2025Founded MossJanak SunilYC Fall 2025Founded Specific LabsSiddhant PaliwalYC Fall 2025Founded Specific LabsDylan MikusYC Fall 2025Founded AmikaJakub CichonYC Fall 2025Founded AmikaMattias LindellYC F25Founded OpenrollPorsev AslanYC F25Founded OpenrollHenry Birge-LeeW26 BatchFounded Crosslayer LabsGrace CimaszewskiW26Founded Crosslayer LabsPrateek MittalYC Winter 2026Founded Crosslayer LabsAndres SantanillaYC Fall 2025Founded itemAkshay GuthalYC Fall 2025Founded itemNaren ChittemYC Fall 2025Founded MayflowerAryan GulatiYC Fall 2025Founded MayflowerEdward HinsonYC Fall 2025Founded Zephyr FusionGalen BurkeF25 | Partner: Garry TanFounded Zephyr FusionDan HymanF25Founded CoastsKabir JainW26Founded Standard PhysicsZiming QiuW26Founded Standard PhysicsNami LindquistYC Winter 2026Founded ClaimGlideJibran HutchinsYC Winter 2026Founded HaladirQuan HuynhYC Winter 2026Founded HaladirPreston SchmittouYC Winter 2026Founded HaladirJoseph TsoYC Winter 2026Founded HaladirGeorgia WitchelYC Winter 2026Founded MantisJoseph ZhangYC Winter 2026Founded CatchBack CardsSophia KimYC Winter 2026Founded CatchBack CardsAngus MuffattiYC Spring 2026Founded Advanced Metal ResearchJulian FriedYC Spring 2026Founded Advanced Metal ResearchStephen LinYC Spring 2026Founded Advanced Metal Research
Frequently asked questions
- What is the Y Combinator mafia?
- The Y Combinator mafia is the network of 10,678 people who came through Y Combinator and went on to found or lead other companies, including Automax.ai, Clad Labs, Absurd, Kalpa Labs, Metorial.
- Who is in the Y Combinator mafia?
- Notable members include Humza Ahmed (Automax.ai), Richard Wang (Clad Labs), Kevin Le (Clad Labs), Philip Ho (Absurd), Daniel Kathein (Absurd), Prashant Shishodia (Kalpa Labs), Gautam Jha (Kalpa Labs), Karim (Wen) Rahme (Metorial), among 10,678 tracked members.
- What companies did Y Combinator alumni found?
- Companies founded by Y Combinator alumni include Automax.ai, Clad Labs, Absurd, Kalpa Labs, Metorial, Denki, Teaflask, Sava, Icarus, Karumi.