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The Y Combinator Mafia

10,678 people came through Y Combinator and went on to found or lead other companies.

Carl StaufferYC Summer 2026Founded Riften Mathieu PerezYC Summer 2026Founded COACH Thomas PerezYC Summer 2026Founded COACH Nicolas SebagYC Summer 2026Founded COACH Berat CelikYC Summer 2026Founded Stoa Eren Berke SaglamYC Summer 2026Founded Stoa Kaan YigitYC Summer 2026Founded Stoa Ayush ChauhanYC Summer 2026Founded Rasyn Daood HashmiYC Summer 2026Founded Rasyn Xia HuaYC Summer 2026Founded Traceforce Varun WadhwaYC Summer 2026Founded Traceforce Jacob PeakeYC Summer 2026Founded Standard Machines Raj JagiasiYC Summer 2026Founded Elite Vihaan JagiasiYC Summer 2026Founded Elite Safi ShamsiYC Summer 2026Founded Graphify Labs Eta AtoliaYC Summer 2026Founded TareBio Alfredo GonzalezYC Summer 2026Founded Omanta Ranad HumeidiYC Summer 2026Founded Omanta Karon PangestuS26Founded Arbital Steven MulyawanS26Founded Arbital Vincent Owen ToniwanS26Founded Arbital Hunter BrownYC Summer 2026Founded Ultrasonium Alexander UrbanskiYC Summer 2026Founded Ultrasonium Alina ParkYC Summer 2026Founded Ekho Labs Rhys SullivanYC Summer 2026Founded Executor Emily ColmanYC Summer 2026Founded RonanRx Inc.Maryanne AlhallakS26Founded Lumeria Anthea GuoYC Summer 2026Founded Lumeria Michael MuzzinS26Founded CarSignal Junaid PopalzaiYC Summer 2026Founded CarSignal Niki KotechaYC Summer 2026Founded Lamb Labs Thomas LanningS26Founded Lamb Labs Akshay MistryYC Summer 2026Founded Capto Ananth SankaralingamYC Summer 2026Founded Capto Aniket DeshpandeYC Fall 2026Founded isoquant Mugdhaa PatankarYC Fall 2026Founded isoquant Emre IsikS26Founded SpaceFlow Technologies, Inc.Hakan Enes AksuYC Summer 2026Founded SpaceFlow Technologies, Inc.Ali Eren AytekinYC Summer 2026Founded SpaceFlow Technologies, Inc.Cheng-Wei HuYC Summer 2026Founded Wondering Angelica KosasihYC Summer 2026Founded Wondering Karan BrarYC Summer 2026Founded Autoresearch, Inc.Thomas BoserYC Summer 2026Founded Autoresearch, Inc.Emile GermonpreS26Founded Atomarine Dimitris KoutentakisS 26Founded Atomarine Ksenia LeskoYC Summer 2026Founded Caution Anton LivajaYC Summer 2026Founded Caution Wilhelm HedenskogYC FellowFounded Petrichor Jesper JohanssonYC Fall 2026Founded Petrichor Elias ReinfeldtYC Fall 2026Founded Petrichor Justin FulcherYC Summer 2020Founded RingMD Sid UnnithanYC Summer 2026Founded Evergrove Oscar BrissetYC Winter 2026Founded Remy AI Ben KayeYC Winter 2026Founded Remy AI Mete KarsliogluYC Summer 2026Founded Meteoric Eric NilssonYC Summer 2026Founded Meteoric Ashank ShahYC Summer 2026Founded Mentlio Ahmet DemirbasYC Summer 2026Founded Mentlio Jason GuoYC Summer 2026Founded Erinys Matthew PallanS26Founded Erinys Sasha ZyuzinYC Summer 2026Founded Erinys Matthew GrollYC Summer 2026Founded Mass Magnetics Eric SilverYC Summer 2026Founded Mass Magnetics Govind ChadaYC Summer 2026Founded Enact James StevensYC Summer 2026Founded Enact David GoodfellowYC Summer 2026Founded Bernard Cameron MalloyYC Summer 2026Founded Studio Nikita MullangiYC Summer 2026Founded Studio Robert QiuYC Summer 2026Founded Mochi Chris LiuYC Summer 2026Founded DeepReach Inc.David HwangYC Summer 2026Founded Grocalo Alex YeeW18 BatchFounded Grocalo Henrik Brun FevangYC Summer 2026Founded Audun Peter FloYC S26Founded Audun Jacob HambroS26Founded Audun Yuhua WangYC Summer 2026Founded Prodigy Research Diego AvellanedaS26Founded Callbook AI Daniel MartinezYC Summer 2026Founded Callbook AI Bryce JudyYC Summer 2026Founded Tarifflo Inc.Edin CitakuYC Fall 2026Founded Veltha Roland JaloszynskiYC Fall 2026Founded Veltha Rui WangYC Summer 2026Founded EdotEnv Michael ZhangYC Summer 2026Founded EdotEnv Colin LaveryYC Summer 2026Founded Aerogen Systems Noah VogelS26Founded Aerogen Systems William A'courtYC Summer 2026Founded Hilstart Simon AlexanderYC Summer 2026Founded Hilstart Rahul BhatiS26Founded Hilstart Josh SchoemanYC Summer 2026Founded Hilstart Subham KunduYC Summer 2026Founded Akon Labs Amgad Al-ZamkanYC Summer 2026Founded Tenor Hamze Al-ZamkanYC Summer 2026Founded Tenor Muhtasham OblokulovS26Founded Tenor Ege DoganayYC Summer 2026Founded Neuromorphic Vatan Aksoy TezerYC Summer 2026Founded Neuromorphic Cem TokerYC Summer 2026Founded Neuromorphic

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 Riften, COACH, Stoa, Rasyn, Traceforce.
Who is in the Y Combinator mafia?: Notable members include Carl Stauffer (Riften), Mathieu Perez (COACH), Thomas Perez (COACH), Nicolas Sebag (COACH), Berat Celik (Stoa), Eren Berke Saglam (Stoa), Kaan Yigit (Stoa), Ayush Chauhan (Rasyn), among 10,678 tracked members.
What companies did Y Combinator alumni found?: Companies founded by Y Combinator alumni include Riften, COACH, Stoa, Rasyn, Traceforce, Standard Machines, Elite, Graphify Labs, TareBio, Omanta.