The Y Combinator Mafia
8,668 people came through Y Combinator and went on to found or lead other companies.
Sam AltmanPresidentFounded LooptFred EhrsamYC Summer 2012Founded CoinbaseMatt HuangYC Winter 2011Founded HotspotsTrae StephensYC Winter 2022Founded PursuitDelian AsparouhovYC Summer 2014Founded Nightingale +1Justin KanYC Winter 2018Founded Rye +3Alex HaroYC Winter 2022Founded MoneyKarma +3Harry GrunerYC Summer 2020Founded Hilos +2Ivan ZhouW18Founded Decagon +2Immad AkhundYC Winter 2009Founded Heyzap +2Dan SirokerYC Winter 2010Founded Limitless +2Brandon PatonYC Winter 2012Founded Glider +2Dave NewmanYC Winter 2012Founded Howie +2Sean GroveYC Summer 2011Founded Linzumi +2Andrew LeeYC Summer 2011Founded Tasklet +2Yin WuYC Summer 2013Founded Pulley +2Darius "Bubs" MonsefW10Founded Pre +2Weiting LiuYC S07 & S12Founded Everyday.me +2Gautam JayaramanS06 (Jamglue) and W14 (Rickshaw) and S21 (Greenwork)Founded Onsite Pro +2Steve HuffmanYC Summer 2011Founded Aisle50 +2João de PaulaEntrepreneurship/Entrepreneurial StudiesFounded Mesmer +2Jon Miller SchwartzLayer By Layer (S13) & Voodoo Manufacturing (W17)Founded Ultra +2Max FriefeldNAFounded Ultra +2Bharat KilaruYC Winter 2019Founded Verano Health +2Aziz AlghunaimYC Winter 2018Founded Nash +2Sebastian FischmeisterYC Winter 2022Founded Labforge Inc +2Ryan XueW23Founded Andco +2Brett GibsonYC Summer 2008Founded Slinkset +1Alexander BlessingYC Summer 2012Founded VoiceGem +1Jinal JhaveriYC Winter 2021Founded SchoolMint +1Aaron MandellYC Summer 2017Founded Quidnet +1Blake SchollYC Winter 2016Founded Boom +1Oleg RogynskyyEntrepreneurship/Entrepreneurial StudiesFounded UFORCE Acquired +1Magnus HambletonYC Summer 2020Founded Depict +1Chad RigettiYC Spring 2025Founded Sygaldry Technologies +1IanFounded Zynga +1Sharath Keshava NarayanaYC Winter 2018Founded Observe.AI +1Guillaume LuccisanoDid Y Combinator 3 timesFounded Yuma AI +1Siddarth JainYC Winter 2023Founded DrDroid +1Bruno FavieroYC Winter 2022Founded Kolena +1Kulveer TaggarYC Summer 2011Founded Auctomatic +1Geoffrey WooYC Summer 2011Founded Archive +1Michael StröckEntrepreneurship/Entrepreneurial StudiesFounded Allocator +1Alex AtallahYC Winter 2018Founded OpenSea +1Kanjun QiuYC Summer 2017Founded Imbue +1James J BesharaWinter 2012Founded Tilt +1Kyle VogtYC Winter 2007Founded Twitch +1Ryan JuneeYC Winter 2011Founded Parsable +1Merrill LutskyYC Winter 2013Founded Graphite +1Euwyn PoonYC Winter 2015Founded 3dot +1Patrick J. CostelloYC S14Founded Naytev +1Ben SilbermannYC Winter 2008Founded Audiobeta +1Alok DeshpandeYC Summer 2005Founded SmartPath +1Eric WuYC Winter 2010Founded Movity +1Daniel KanYC Winter 2014Founded Cruise +1Emmett ShearYC Summer 2005Founded Twitch +1Gordon WintrobYC Winter 2014Founded Newfront +1Howie LiuYC Winter 2010Founded Etacts +1Nimit MaruStartups (S12 Batch)Founded Sava +1Oliver CameronYC Summer 2011Founded Everyme +1Ralph GooteeYC Summer 2022Founded TigerEye +1Scott MossYC Summer 2024Founded Doublezero +1Sheridan ClayborneYC Summer 2020Founded Lendtable +1Raquel BuendiaYC Summer 2007Founded Chronosphere +1Oleg KostourW12 / F25Founded AtlasGrid +1Anton KrutianskyYC Winter 2012Founded AtlasGrid +1Brian NoguchiW21Founded Smartcuts +1Aamir PoonawallaTapToLearn - yCombinator Class of W2012Founded Understudy Labs +1Edward KimYC Winter 2012Founded Picwing +1Henry LiuW12Founded Glider +1Peter DelahuntyYC Winter 2012Founded 99dresses +1Min Ming LoWinter 2012Founded Hyperink +1Lawrence GentilelloFounderFounded Optery +1Amir GhazvinianYC Winter 2016Founded Interstate Analytics +1Sasha OrloffW'12 BatchFounded Lendup +1Khaled HusseinTilt (W12)Founded Tilt +1Quin HoxieYC Winter 2026Founded Fixture +1Drew DurbinYC Winter 2012Founded Wave +1Sam OdioYC Summer 2011Founded Divvyshot +1Robert FarazinYC Summer 2011Founded Dubjoy +1Pradeep ElankumaranS16Founded jo +1Darren NixS11 and S15Founded Interviewed +1Jason TraffYC Summer 2011Founded Shipwell +1Srini PanguluriYC Winter 2006Founded Project Wedding +1Peter ClarkYC Winter 2011Founded Journey +1Jason CorwinYC Summer 2019Founded Safely Finance +1Eric MigicovskyYC Summer 2021Founded Beeper +1Leah CulverConvoreFounded Breaker +1Ev KontsevoyYC Winter 2011Founded Teleport +1Taylor WakefieldYC Summer 2015Founded Teleport +1Ryan BednarW17Founded RankScience +1Gabe KrambsYC Winter 2011Founded Compound +1Daniel KivatinosEntrepreneurship/Entrepreneurial StudiesFounded loopfour +1Qasar YounisYC Winter 2011Founded TalkBin +1Adam GoldsteinYC Summer 2010Founded Astonishing Labs +1Ray GrieselhuberAcceleratorFounded Functionize +1
+ 8,572 more