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The Y Combinator Mafia

10,658 people came through Y Combinator and went on to found or lead other companies.

Bryan ZinYC Winter 2026Founded Reframe +1 Arne StrickmannYC Winter 2026Founded Emdash +1 Arushi GandhiW26Founded Bugbase +1 Raj PatelYC Winter 2026Founded MANTL +1 Kayra BahadirWinter 2026 BatchFounded Prestige +1 Sam AlbaYC Winter 2019Founded Mendral +1 Andrea LuzzardiW19Founded Mendral +1 Gabriel DymowskiYC Winter 2026Founded Pocket +1 Casey SpencerYC Winter 2026Founded ItsWare +1 Samuel LadroueSpring 2026Founded Alan +1 Kiet HoYC Winter 2025Founded Superset +1 Satya PatelYC Spring 2026Founded Homebrew +1 Mathias LøvringYC Summer 2020Founded Balance +1 Gus LevinsonYC Winter 2026Founded Balance +1 Wasi AhmedW26Founded Maven +1 Mith Paresh PatelW26Founded Sila +1 Carl HuangW26Founded Sila +1 Matt RileyVisiting PartnerFounded Fixture +1 Ray FitzgeraldYC Spring 2026Founded Bloom +1 Luke ButtonYC Fall 2025Founded Hedge +1 Moody AbdulSpring Batch P26Founded Klarify +1 Ethan ByrdYC Spring 2026Founded Actual +1 Serena PeiYC Summer 2026Founded Palette +1 Advaith SridharYC Spring 2026Founded Matforge +1 Akash RamdasYC Spring 2026Founded Matforge +1 George PostlethwaiteYC Spring 2026Founded Gaea +1 Fred FooksYC Spring 2026Founded Gaea +1 Arseniy ShishaevP26Founded Superlog +1 Corentin HugotYC Spring 2026Founded Kinro +1 Yoeven D KhemlaniYC Spring 2026Founded Jigsawstack +1 Ali AbdallaYC Spring 2026Founded Gradio +1 Ali AbidYC Spring 2026Founded Gradio +1 Julius ScheelYC Spring 2026Founded transload +1 Tim ZinklYC Spring 2026Founded Pairio +1 Kevin YuP26Founded Savant +1 Sven MyhreYC Spring 2026Founded Ara +1 Dimitris PagonakisYC Spring 2026Founded Sesamevault +1 Jonny DimondYC Spring 2026Founded Tasklet +1 Tom WatsonYC Spring 2026Founded Hubble +1 Ben FrankYC Spring 2026Founded Seer Aerospace +1 Jerry WuYC Spring 2026Founded Auxos +1 Utkarsh SinhaYC Spring 2026Founded Martian +1 Kevin WongSpring 2026Founded CentralComs +1 Seb PooleP26Founded Modern +1 Shalin ShahYC Summer 2021Founded Hyper +1 Kanyes ThakerYC Spring 2026Founded Hyper +1 Jeffrey ByunPortfolio Company FounderFounded OrderAhead +1 Michael MarcotteYC Summer 2026Founded Perceptronml +1 Peyton MarcotteS26Founded Perceptronml +1 Zachary YuS26Founded Belvedir +1 Beknazar AbdikamalovYC Summer 2026Founded Speko +1 Gary WuYC Summer 2026Founded General Context Labs +1 Erik PetersonYC Summer 2026Founded RealPact +1 Arjun ChalihaS26Founded Joinmarble +1 Aakar KhannaS26Founded Joinmarble +1 Kushagra ChitkaraYC Summer 2026Founded Usealmanac +1 Divit ShethS26Founded Usealmanac +1 Ray LiaoYC Summer 2026Founded Empallo +1 Karen SerfatyYC Summer 2026Founded Agentcard +1 Ian LeeS26Founded Syndicate +1 Meera PatelYC Summer 2026Founded HERA +1 Noelle SoYC Summer 2026Founded HERA +1 Tim SherwoodW2021Founded ICON +1 Nikhil ReddyYC Spring 2025Founded Datoric +1 Mert TurnaYC Summer 2026Founded Derya +1 Yuri SagalovVisiting PartnerFounded AeroFS +1 Karim AtiyehS15Founded Paribus +1 Brain XiangRoforco S22Founded Roforco +1 Shiliang TangW16Founded Monarq +1 Andrew NakkacheYC Winter 2019Founded Habitat +1 Saaras MehanW22Founded Kular +1 Anicet NougaretYC Fall 2026Founded Boat +1 Thomas CloarecYC Spring 2026Founded Deep Marketer +1 Hrishi OlickelYC Winter 2021Founded Southbridge +1 Tom WatsonS23Founded Hubble +1 Saksham AggarwalYC Winter 2026Founded Iterate AI +1 Pandu RaharjaYC Summer 2021Founded Panakeia +1 François-Guillaume FernandezYC Summer 2023Founded Quack AI +1 Jakub LangrHypermile (Acquired)Founded Rig +1 Konstantin KlinglerYC Summer 2020Founded Seamflow +1 Louis MonsignyStartup Founder (W22 batch)Founded Syntetica +1 Michael HirnYC Winter 2026Founded Toolkit +1 Ammon BartramYC Winter 2012Founded Triplebyte +1 Santiago GomezAlumni W18Founded Padel Haus +1 Daniel BernardezYC Summer 2019Founded Crabi +1 Leonardo MagliaAlumni Batch S20Founded Henry +1 Jeremiah SmithS20 BatchFounded OpenCover +1 Yury OparinS20 BatchFounded OpenCover +1 Neel PalrechaYC Summer 2010Founded Friskai +1 Tulio JimenezYC Summer 2019Founded Laika +1 Debo OlaosebikanYC Summer 2015Founded Keplercompute +1 Alex LinYC Summer 2016Founded Hush +1 William KingYC Summer 2016Founded Subspace +1 Ariel KatzYC Winter 2020Founded H1 Insights +1 Anish DharYC Winter 2022Founded HomeRoom +1 Nicolas BustamanteYC Winter 2023Founded Doctrine +1

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Frequently asked questions

What is the Y Combinator mafia?: The Y Combinator mafia is the network of 10,658 people who came through Y Combinator and went on to found or lead other companies, including Reframe, Emdash, Bugbase, MANTL, Prestige.
Who is in the Y Combinator mafia?: Notable members include Bryan Zin (Reframe), Arne Strickmann (Emdash), Arushi Gandhi (Bugbase), Raj Patel (MANTL), Kayra Bahadir (Prestige), Sam Alba (Mendral), Andrea Luzzardi (Mendral), Gabriel Dymowski (Pocket), among 10,658 tracked members.
What companies did Y Combinator alumni found?: Companies founded by Y Combinator alumni include Reframe, Emdash, Bugbase, MANTL, Prestige, Mendral, Pocket, ItsWare, Alan, Superset.