Here are the top 200 Meetup Groups according to Meetup.com

Name City Country Focus Members Contact Name
Hackers and Founders Mountain ViewUSHackers/Founders 15378Jonathan Nelson
Tech in Motion Events: San Francisco San FranciscoUSTechnologists 13075Mandy Ivy
Code Crew - Learn to Code! New YorkUSSwabbies 11594Jamal
Fullstack Developers Israel Tel Aviv-YafoILFullstackers 10718Lior Kanfi
106 Miles Palo AltoUS106ers 8705Adam
Le Wagon São Paulo - Coding Bootcamp São PauloBRcoders 8017Mathieu Le Roux
she codes(tlv); Tel Aviv-YafoILCoders 7436Ruth Polachek
Tech In Motion: Orange County IrvineUSTechnologists 7217Mandy Walker
Hacker Hours New YorkUSHaxors 6617Aidan Feldman
Tech Talks @ Pivotal Labs Sydney SydneyAUMembers 6558Amjad Sidqi
New York MongoDB User Group New YorkUSMembers 6483MongoDB
Geekfest ChicagoUSGeeks 6142Geekfest
The San Francisco Ruby Meetup Group San FranciscoUSRuby enthusiasts 6013Bosco So
Hack Reactor: Learn to Code San FranciscoUSEngineers 5948Tyler Lambe
Ironhack Barcelona - UX Design & Tech School BarcelonaESIronhackers 5468Eva Peris
Swift Language User Group (San Francisco) San FranciscoUSSwifters 5374S. Nayyer
NYC.rb New YorkUSRubyists 5223Rashaun Snuggs Stovall
StarsConf meetup SantiagoCLSlackers 5168Jorge Alberto Rodríguez Suárez
Learn to Code San Francisco San FranciscoUSMembers 5123Galvanize
I am Happy Project - Ni Dilli, Indian Ni DilliINHappy People 5092I am Happy Project
Code for Boston CambridgeUSCivic Innovators 5067Code for America Brigade
Bay Area Hackathons San FranciscoUSHackers 4960Raj
Find a Tech Job LondonGBCareer Networkers 4682Samantha hepburn
ChicagoRuby ChicagoUSRubyists 4542Nicole Carpenter
San Francisco Ruby on Rails Group San FranciscoUSMembers 4526Cassandra Salisbury
Chicago Women Developers ChicagoUSAmazing People 4395Melissa Pierce
Real World React San FranciscoUSDevelopers 4274Benjamin Dunphy
NYC on Rails New YorkUSRuby developers 4156Avi Flombaum
Dev Bootcamp NYC Events and Workshops New YorkUSDevs 4080Eric David Benari
Women Who Code Boston BostonUSCoders 4025Women Who Code
Pittsburgh Code & Supply PittsburghUSMembers 3993Code & Supply
Hack && Tell New YorkUSHackers 3902Danielle Sucher
Toronto Hack and Tell TorontoCAHackers 3807Alex E
Learn Code in Atlanta (Study Groups) AtlantaUSLearners 3805Ivy Rueb
Melbourne Web Developers MelbourneAUDevs 3798Emma
Developer User Group JohannesburgZASoftware Developers 3785Robert MacLean
Data Wranglers DC WashingtonUSData Wranglers 3691Data Community DC
Ruby and Rails Melbourne MelbourneAURubyists 3634reinteractive Meetups
Women Who Code Austin AustinUSCoders 3633Women Who Code
Delhi MongoDB User Group DelhiINMembers 3518MongoDB
LA Web/Mobile Software Entrepreneurs Santa MonicaUSFuture Billionaires 3496Craig FS
The Opportunity Hub - Atlanta AtlantaUSMembers 3496Rodney Sampson
Learn to Code Austin AustinUSAspiring Coders 3373Galvanize
Community Hack Night Los AngelesUSMembers 3319Dubie
San Francisco MongoDB User Group San FranciscoUSMongoDB Fans 3176MongoDB
NYC Tech Talks New YorkUSNYC Techies 3163Greg Whalin
Le Wagon Berlin - Coding Bootcamp BerlinDEMembers 3142Philipp von Hammerstein
Memphis Technology User Groups MemphisUSTechies 3060Bryan Robinson
CodeLearn Hong Kong Hong KongHKLearners & Thinkers 3060Zak Burki
Tech Talk DC ArlingtonUSPolyglots 3010Doguhan Uluca
DC Ruby Users Group WashingtonUSRuby enthusiasts 2992Geoff Harcourt
Tech Talent South - Atlanta AtlantaUSMembers 2960Tech Talent South
Amsterdam Python Meetup Group AmsterdamNLPythonistas 2947Byte
Paris.rb ParisFRRubyistes 2924Thibaut Assus
Learn to Code Colorado DenverUSMembers 2827Galvanize
Toronto Ruby Brigade TorontoCARubyists 2756Luke Reeves
Le Wagon Lisbon - Coding Bootcamp LisbonPTapprentices 2733Shannon Graybill
Silicon Valley Ruby Meetup San JoseUSRubyists 2688Bala Paranj
Carbon Five SF Talk Nights San FranciscoUSmembers 2600Carbon Five
Vancouver Ruby Meetup Group VancouverCARuby Developers 2598Philippe Creux
Singapore Ruby Group SingaporeSGRubyists 2580Winston Teo
Silicon Valley Ruby on Rails Palo AltoUSRuby on Rails Engineers 2579Amit Gadhia
San Francisco Creative Coders San FranciscoUSTechnologists 2526Christopher Marsh
Pune Ruby Users Group PuneINRubyists 2525Gautam Rege
Atlanta Ruby Meetup Group AtlantaUSRuby programmers 2521Riaz
Marketing for Non-Marketers San Francisco San FranciscoUSDigital Marketing Geeks 2484Eva from Product School
Anyone Can Learn To Code Chicago ChicagoUSCoders 2472Jay Wengrow
Developing with Data in San Francisco San FranciscoUSDevelopers 2459Scott Mitchell
Carbon Five LA Hack Nights Santa MonicaUSHackers 2424Carbon Five
Dev Dialogue New YorkUSDevelopers 2393Matthew Jording
Chilango Dev México CityMXDevs 2365Eric Northam
Le Wagon Amsterdam - Coding Bootcamp AmsterdamNLWagoners 2299Anne Collet
Ruby on Rails Oceania Sydney SydneyAURubyists 2294reinteractive Meetups
Women Who Code Delhi DelhiINWomen Who Code-rs 2294Women Who Code
Learn to Code at the Denver Library DenverUSMembers 2293Alex Baker
Technology Job Seekers Greater Boston BostonUSProfessionals 2288Maureen
Madrid MongoDB User Group MadridESMembers 2283MongoDB
Ruby Perú LimaPERubyistas 2277Gustavo
Geeknight Coimbatore CoimbatoreINMembers 2259Selvakumar Natesan
Techstarters Vancouver VancouverCATechstarters 2243Sarah Foot
Women Who Code LA Culver CityUSCoders 2223Women Who Code
Dubai DevNights DubaiAEMembers 2190Seb Dietzel
Chennai.rb Ruby User Group ChennaiINRubyists 2123Steve Robinson
The Iron Yard - Charleston CharlestonUSMembers 2123Tom Wilson
Code Till Dawn Saint LouisUSCoders 2107Nicholas Diaz
The Iron Yard Austin AustinUSProgrammers and Designers 2077Justin Herrick
The Los Angeles Ruby/Rails Meetup Group Los AngelesUSRuby programmers 2076Claudio B.
Azure Community Singapore (ACS) SingaporeSGAzure Community Members 2066Riza Marhaban
Denver Hack Nite DenverUSHacks 2048Josh Robinson
Women Who Code Manila ManilaPHAwesome Women Coders 2045Women Who Code
GDG Jalandhar JalandharINCommunity Member 2041Nitika Rajput
Paris MongoDB User Group ParisFRMembers 2031MongoDB
SF Code & Coffee San FranciscoUSMembers 2017Dylan
Nairuby NairobiKEMembers 1948Christian Reuterwall
Greetings, SVBBDev - BlackBerry App Developers! Santa ClaraUSSVBBDev - BB App Developers 1944Ping Bartley
New York Ruby on Rails New YorkUSRails Engineers 1943Michael Latulippe
Austin Programmer Community AustinUSProgrammers & Developers 1941George Pazdral
Bangalore Ruby Users Group BangaloreINRubyists 1921Swanand Pagnis
Le Wagon Tokyo - Coding Bootcamp TokyoJPWagoners 1917Paul Gaumer
LA Web Application Developers Meetup Los AngelesUSWeb Software Engineers 1914will jessup
Hacker News Chicago Meetup ChicagoUSHackers 1897Eric L
Holberton School San FranciscoUSSeahorses 1897Julien Barbier
Hire Ruby on Rails Developers San FranciscoUSdevs and companies 1893Eric Siegfried
Charlotte Devs CharlotteUSDevs 1881Alyssa Lemon
SoundCloud Tech Meetups - Berlin BerlinDEpeople 1861Vincent Garrigues
Berlin Startup Culture (BSC) BerlinDEMembers 1852George Papa
DomCode UtrechtNLCoders 1850Lucas van Lierop
The East Bay Ruby Meetup Group BerkeleyUSRuby programmers 1829Bala Paranj
Dev Paraná MaringáBRDesenvolvedores 1827Fernando Fabricio dos Santos
Dublin DevOps Meetup DublinIEFriends 1815Cassiano Aquino
Learn Code in LA Los AngelesUSLearners 1786Ivy Rueb
GolangNYC New YorkUSGophers 1784Gray Herter
The Seattle Ruby on Rails Developers Meetup Group SeattleUSRailers 1772Bill Harding
Montana Programmers KalispellUSMontana Programmers 1768Wes
London Code Dojo LondonGBDevelopers 1721@sleepyfox
The Triangle Ruby Brigade (Triangle.rb) RaleighUSRubyists 1715Brandon Mathis
Women Who Code Mexico City México CityMXCoders 1696Women Who Code
Fog City Ruby Meetup San FranciscoUSRubyists 1696Stella Cotton
Lehi Developers User Group LehiUSDuggers 1685Jeffrey Walter
Turing Community Events DenverUSMembers 1682Jeff Casimir
N-Languages New YorkUSN-langers 1678EVIE B0RTHWICK
Tech nights in Medellín MedellínCOMembers 1664Sebastian Miranda
Web Innovations- Houston HoustonUSMembers 1651Chen Sun of WebAndNet.com
Tech Talent South - Columbus ColumbusUSTech Tribe Members 1650Tech Talent South
Ottawa Ruby – we <3 programming OttawaCARuby Ninjas 1646Michael Prendergast
Pittsburgh Agile (@PittAgile | #PittAgile) PittsburghUSAgilistas 1645Jon R. Stahl
Coded in Braam JohannesburgZATechies 1643Niel de Wet
Open Source Hong Kong Hong KongHKMembers 1643Sammy Fung
Amsterdam.rb AmsterdamNLRubyists 1641Rayta van Rijswijk
Leeds Digital LeedsGBMembers 1627Natasha Sayce-Zelem
Austin Software Engineers & App Developers AustinUSSoftware Engineers/Developers 1620Chris Requena
Quality Assurance New YorkUSMembers 1605Anthony
Boston Ruby on Rails Meetup Group BostonUSRails-ists 1600MG
Delhi NCR Ruby Meetup Group DelhiINRubyists 1588Prabhat Gupta
Ruby Business (UK) LondonGBrubyists 1586Jairo Diaz
Rails Taiwan TaipeiTWrubyists 1567xdite
Le Wagon Barcelona - Coding Bootcamp BarcelonaESfuture coders 1567Gus De Vita
SF Front-End Developers: Experience Engineering San FranciscoUSExperience Engineers 1563Ahmad Ansari
Le Wagon Bordeaux - Coding Bootcamp BordeauxFRApprentis 1545Bertrand
Handy Tech Talks New YorkUSMembers 1538Eric David Benari
Porto Codes PortoPTVariables 1537Ricardo Mendes
Ruby Hacknight - London LondonGBRubyists 1536Jairo Diaz
Learn to Code - for Complete Beginners in San Francisco. San FranciscoUSCoders In Training 1515Andy Tiffany
Flatiron School Seattle Coding Community SeattleUSLearners 1482Emily Doyle
Girls Coding Club HoustonUSCoders 1473Amanda Shih
Jeddah Software Developers JiddahSADevelopers 1472Aaron Q. Johnson
Hacks/Hackers Atlanta AtlantaUSMembers 1469Hacks/Hackers
Codewords Pune PuneINCraftsmen 1466Karan Rai
Developers Day powered by kariera.gr AthensGRFellows 1459kariera.gr
Polyglot.LA Los AngelesUSpolyglots 1456Polyglot.LA Organizer Team
Landing Meetups LisbonPTMembers 1450Landing.jobs
NewHaven.IO New HavenUSTech Minded People 1448Tom Reznick
NYC Ruby Women New YorkUSRubyists 1447Chrys Wu
TOKYO Rails Meetup TokyoJPMembers 1441Leszek
RubyOn - Ruby On Rails - São PauloBRRubistas 1441Leandro Afonso
Paris Ruby Workshop ParisFRRubyistes 1434Victor Mours
The Brisbane Ruby and Rails BrisbaneAURuby/Rails developers 1430Nigel
Cleveland Agile Group (#CleAG) ClevelandUSAgilistas 1423Jon R. Stahl
Nola Hack Night New OrleansUSHackers 1423Cory Fabre
YulDev MontréalCADev 1399Daniel LeBlanc
BASE (Birmingham Alabama Software Enthusiasts) BirminghamUSSoftware Enthusiasts 1396David Lormor
B'more on Rails BaltimoreUSRubyists 1357Chris Strom
Python in Korea SeoulKRGeeks 1353Eric Kim Hoik
Krakow Ruby Users Group (KRUG) KrakówPLRuby enthusiasts 1332Sebastian Bobrowski
Advance in your career - Udacity London Meetup LondonGBUdacians 1328Andy Parker
NYC Apache Lucene/Solr Meetup New YorkUSLuceners 1327Grant Ingersoll
Denver.rb DenverUSrubyists 1327Jason Waldrip
Stockholm Ruby StockholmSERubyists 1312Martin Svalin
Enspiral Dev Academy Wellington WellingtonNZFriends of Dev Academy 1302Enspiral Dev Academy
Alchemy Code Lab PortlandUSAlchemists 1298Marty Nelson
The Sacramento Ruby Meetup SacramentoUSRubyists 1297Christopher Haupt
Medellín.rb MedellínCORubyists 1295Oscar Rendón
The jQuery Boston Meetup Group BostonUSMembers 1286Alessandra Rosenberg
Ruby Ireland DublinIERuby Irelanders 1285Declan
Boulder Ruby Group BoulderUSRubyists 1276Marty Haught
ThoughtWorks Belo Horizonte Coding Dojos Belo HorizonteBRCoders 1275Adriano Lisboa
WebApp Builders - Fullstack Projects (LA Eastside) GlendaleUSWebApp-Builders 1274Kobi
Le Wagon Rio de Janeiro - Coding Bootcamp Rio de JaneiroBRCoders 1268Fernando Americano
Graduate Developer Community LondonGBDevelopers 1263Barry Cranford
Arlington Ruby ArlingtonUSRubyists 1258Jim Gay
Montreal.rb MontréalCARubyists 1251Sophie Déziel
Junior Developers Singapore SingaporeSGMembers 1240Michael Cheng
Orange County Ruby Users Group (OCRuby) IrvineUSRocking Rubyists 1236Forrest Chang
Code Fellows Seattle Meetup SeattleUSMembers 1232Code Fellows
SFBay Apache Lucene/Solr Meetup San MateoUSLuceners 1224Alea Abed
Le Wagon Lille - Coding Bootcamp LilleFRApprentis 1203François-Xavier Abraham
Full Stack Talks CarlsbadUSDesigners & Developers 1194Jeff Berg
All Things API: Denver DenverUSAPI Aficionados 1193Monica Peotter
Full Stack PDX PortlandUSEntrepreneurs and Engineers 1185Chris Hough
SD Ruby (Ruby on Rails Enthusiasts) La JollaUSRubyists 1181Patrick Crowley
[MumbaiRB] Mumbai Ruby Meetup MumbaiINRubyist 1180Bilal Budhani
Los Angeles Hack Night Los AngelesUSHackers 1173Lance Lakey
EBANX Meetups CuritibaBRMembers 1170EBANX Meetups
Philly.rb PhiladelphiaUSRubyists 1168Ernesto Tagwerker
Ruby Nuby™ New YorkUSNubies and Rubyists 1167Malcolm Arnold
Coding For Absolute Beginners - Delhi NCR DelhiINNinjas 1166Progate India
Bitnami Sevilla SevillaESbitcoders 1164Beltran
Le Wagon Melbourne - Coding Bootcamp MelbourneAUCreatives 1143Paal at Le Wagon Coding Bootcamp
Ruby Project Night NYC New YorkUSRubyists 1136Eric Collins
Women Who Code Tokyo TokyoJPCoders 1122Women Who Code