Fundraising Fox
The Y Combinator Mafia
10,702 people came through Y Combinator and went on to found or lead other companies.
Maximilian-David RumpfS23 BatchFounded SIDLotte SeifertYC Summer 2023Founded SIDAleks ĐekićS23Founded AlgunaJamie MacLeodS23Founded AlgunaJohn GlasgowSummer 2023 BatchFounded CampfireJoel AlexanderYC Summer 2023Founded PareaJoschka BraunS23 BatchFounded PareaLucas SpreiterS23Founded Venta AIStefan ReutherYC Summer 2023Founded Venta AIDaniel AlbersonYC Summer 2023Founded PunchcardDavid Zhi LuoZhangS23Founded Bronco AIJeffrey PanFounderFounded Bronco AIDerek FeehrerYC Summer 2023Founded KiteTodd AshleyYC Summer 2023Founded KiteNaxin WangYC Summer 2023Founded Obento HealthShaunak TuragaS23Founded DocsumAlex LeonovYC Summer 2023Founded DocsumHussein SyedYC Summer 2023Founded ArcimusWael Al SallamiYC Summer 2023Founded CraftOSGregory LemberskiyYC Summer 2023Founded MICSIBenjamin Ades-AronYC Summer 2023Founded MICSIAhmad SadeddinYC Summer 2023Founded CorgeaAlan WangS23Founded SerraAaron CannonYC Summer 2023Founded OutsetMichael HessS23Founded OutsetKevin TseYC Summer 2023Founded Hegel AISrinjoy MajumdarYC Summer 2023Founded Shasta HealthPransu DashYC Summer 2023Founded Shasta HealthLucas da CostaS23Founded BrieferLucas VieiraS23Founded BrieferAlan LiuYC Summer 2023Founded Health HarborQasim MunyeYC Winter 2026Founded MenzaMariam AhmedYC Winter 2026Founded MenzaPaul SingerYC Summer 2023Founded FleetWorksQuang TranYC Summer 2023Founded FleetWorksTosin OnafuyeS23Founded Chow Central IncChristopher ObasiYC Summer 2023Founded Chow Central IncAdeyemi OnafuyeYC Summer 2023Founded Chow Central IncBen ShumakerYC Summer 2023Founded RepaintIzak FritzYC Summer 2023Founded RepaintParam BidjaYC Summer 2023Founded MarginAkash KashyapYC Summer 2023Founded DialtoneEthan BlackburnYC Summer 2023Founded HiroMuhammad KhattakYC Summer 2023Founded Cardinal GrayGrant PeaseS23Founded Cardinal GrayShuchang ZhengYC Summer 2023Founded SkyvernDaniyal AfzalYC S23Founded Decoda HealthKevin ChengS23Founded Decoda HealthLuca SpringerS23Founded NumenThomas CarrollS23Founded NumenDavid de MatheuS23Founded VetRecKevin CohenYC Summer 2023Founded VetRecKyle ArchieYC Summer 2023Founded LystoManuel Diaz-GranadosYC Summer 2023Founded LystoEgor GaginYC Summer 2023Founded LystoMamal AminiYC Winter 2024Founded GovernGPTOliver WalerysYC Winter 2024Founded GovernGPTBennett CohenWriting Code and Talking to UsersFounded MaintouchRichard SongYC Summer 2023Founded EpsillaRicki QinYC Summer 2023Founded EpsillaEric YangYC Summer 2023Founded EpsillaJason LinS23Founded SidenoteScott HickmannS23Founded SidenoteSchwinn SaereesitthipitakYC Summer 2023Founded SidenoteCivan OzseyhanYC Summer 2023Founded refineOmer AplakS23Founded refineEren ErkalkanYC Summer 2023Founded refineHaris IkramYC Summer 2023Founded CandorIQSutthipong ThavisomboonYC Summer 2023Founded CandorIQSaharsh AgrawalYC Summer 2023Founded Surface LabsArjun SahaiS23 BatchFounded Surface LabsAlex PedersenYC Winter 2025Founded Egress HealthMichael BradyYC Summer 2023Founded Maven BioArjun MurthyYC Summer 2023Founded Maven BioLouis LecatYC S23Founded UpstreamJonathan TiretYC Summer 2023Founded UpstreamRyan ChowYC Summer 2023Founded MetalwareAndrew NedeaS23Founded MetalwareEduard OravkinYC Summer 2023Founded MediSearchMichal PándyYC Summer 2023Founded MediSearchKonstantin HohrSummer 2023Founded MidrenderAli ShobeiriYC Summer 2023Founded VizlySami SahnouneS23Founded VizlyJohn BannerBatch S23Founded AgentCollectPatrick D. McGuckianBatch S23Founded AglideOliver ColebourneS23 Batch (Aglide)Founded AglideCydney KimYC Summer 2023Founded Fortuna HealthBen WesnerYC Summer 2023Founded Fortuna HealthRaquel Rodriguez MartinezYC Summer 2023Founded Empirical HealthJason KerkvlietS23Founded LifestyleRxBrendan ByrneYC Summer 2023Founded LifestyleRxJack HilliardYC Summer 2023Founded LifestyleRxDaniel PfingstgraefS23Founded LifestyleRxDaniel FangYC Summer 2023Founded GladeAnuhya VajapeyYC Summer 2023Founded CareOasisJuan M Ochoa OrtizYC Summer 2023Founded CareOasis
Frequently asked questions
- What is the Y Combinator mafia?
- The Y Combinator mafia is the network of 10,702 people who came through Y Combinator and went on to found or lead other companies, including SID, Alguna, Campfire, Parea, Venta AI.
- Who is in the Y Combinator mafia?
- Notable members include Maximilian-David Rumpf (SID), Lotte Seifert (SID), Aleks Đekić (Alguna), Jamie MacLeod (Alguna), John Glasgow (Campfire), Joel Alexander (Parea), Joschka Braun (Parea), Lucas Spreiter (Venta AI), among 10,702 tracked members.
- What companies did Y Combinator alumni found?
- Companies founded by Y Combinator alumni include SID, Alguna, Campfire, Parea, Venta AI, Punchcard, Bronco AI, Kite, Obento Health, Docsum.