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

Name City Country Focus Members Contact Name
Virtual Java User Group LondonGBvJUGers 16169Simon Maple
Google Developer Group Silicon Valley Mountain ViewUSGoogle Developers 13577Peter Mooshammer
Tech in Motion Events: San Francisco San FranciscoUSTechnologists 13075Mandy Ivy
Developers-BR São PauloBRDevs 11758Valerio Ferreira
The New York City Java Meetup Group New YorkUSJava enthusiasts 11601Dario Laverde
Tech in Motion: Washington DC ArlingtonUSTechnologists 11451Mandy Walker
Fullstack Developers Israel Tel Aviv-YafoILFullstackers 10718Lior Kanfi
New York Software Engineers (NYSE) New YorkUSSoftware Engineers 8739Michael Latulippe
Tech in Motion: Silicon Valley San JoseUSTechnologists 8484Mandy
Tech in Motion: Los Angeles Los AngelesUSTechnologists 7554Mandy
The Agile Roundabout LondonGBAgile enthusiasts 7360Phill Bateman
Tech in Motion: Philadelphia PhiladelphiaUSTechnologists 7294Mandy
Istanbul Coders IstanbulTRCoder 7220Selim Öber
Tech In Motion: Orange County IrvineUSTechnologists 7217Mandy Walker
LJC - London Java Community LondonGBJava Developers 6934Barry Cranford
Silicon Valley Android Developers Palo AltoUSAndroid Developers & Users 6791davidcao01 SVE.io
Google Developer Group San Francisco @sf_gdg San FranciscoUSGoogle Developers 6665James Cha
Hacker Hours New YorkUSHaxors 6617Aidan Feldman
New York MongoDB User Group New YorkUSMembers 6483MongoDB
Silicon Valley Java User Group Mountain ViewUSJava Developers 6458Kevin Nilson
The San Francisco Java User Group San FranciscoUSJava Developers 6172Pieter Humphrey
GDG Ahmedabad AhmedabadINTechnology Explorers 5793Paresh Mayani
Bangalore JAVA User Group (BangaloreJUG) BangaloreINjuggie'z 5752Ranganath.S
Skills Matter - X Matters Series - Developer Events LondonGBsoftware craftspeople 5656Melita Cawdell - Skills Matter
London App Brewery LondonGBApp Makers 5654Philipp Muellauer
ThoughtWorks Geek Night - NCR DelhiINMembers 5183Avinash Chugh
Tech Interviews and Competitive Programming Mountain ViewUSSolution Finders 5150Jonathan R.
RIoT RaleighUSRIoTers 5103Tom Snyder
Bay Area Hackathons San FranciscoUSHackers 4960Raj
Jforum Stockholm StockholmSEMembers 4943Mattias Karlsson
¿Por qué aprender a Programar? BogotáCONuevos Programadores 4818Cesar
Find a Tech Job LondonGBCareer Networkers 4682Samantha hepburn
Arte e Programação São PauloBRPessoas 4649Alexandre Villares
The San Francisco Android GDG San FranciscoUSAndroid Developers 4631Ty Smith
allegro Tech WarsawPLTechs 4504Janek P.
New York Android Developers New YorkUSMembers 4465Kevin Galligan
London Software Craftsmanship Community LondonGBSoftware Crafters 4452Sandro Mancuso
Amazon Web Services - Virginia HerndonUSMembers 4448Kelly
GOTO Nights CPH CopenhagenDKMembers 4335Tine Grarup
GDG Cambridge, Boston and Metro, Google Developer Group CambridgeUSMembers 4313Steven Max Patterson
AI Users Group UK LondonGBAI Specialists 4232Dan Harvey
Hyderabad Hadoop, Data science, AWS and IOT Group HyderabadINMembers 4207Arun Sirimalla
Neo4j - London User Group LondonGBPeople 4199Neo4j
Berlin Hack and Tell BerlinDEHackers 4182Keith Corwin
The Future is made in Javascript Tel Aviv-YafoILJavascripters 4151Yaron Biton
Java Meetup - Bangalore BangaloreINDukes 4005Ganesh Samarthyam
Bay Area Android Developer San FranciscoUSDevelopers 3993Stephan Branczyk
GDG Paris - Google Developer Group ParisFRParticipants 3992Alain Regnier
Paris Android User Group ParisFRMembres 3951Stephane Guerin
Bogotá JVM Meetup BogotáCOdevelopers and entrepreneurs 3951Julian Espinel
Melbourne Web Developers MelbourneAUDevs 3798Emma
Developer User Group JohannesburgZASoftware Developers 3785Robert MacLean
Women Who Code Berlin BerlinDEMembers 3764Women Who Code
Stacja IT Warszawa WarsawPLMembers 3730Maria Nowakowska
By ThoughtWorks tech-talk series MelbourneAUMembers 3712Karen Dumville
Istanbul Spring Meetup IstanbulTRMembers 3704Erdem Gunay
AWS Seattle | Official Events SeattleUSMembers 3662Ross Barich
Seattle Android Developers SeattleUSAndroid Developers 3647Chris Pick
Boston Software Engineers BostonUSSoftware Engineers 3542Michael Latulippe
São Paulo Java Meetup São PauloBRJaveiros 3537Bruno Marinho
Delhi MongoDB User Group DelhiINMembers 3518MongoDB
Bay Area Full Stack Mountain ViewUSnvirters 3501Vikram Dham
Istanbul Java User Group (JUG) - @jug_istanbul IstanbulTRMembers 3500Altug Bilgin Altintas
ny-scala New YorkUSScala Types 3485Dustin Whitney
London Scala Users' Group LondonGBEnthusiasts 3468Andy Hicks
GOTO Nights - London, UK LondonGBFriends 3467Maria Wennestam
Code Oregon PortlandUSStudents 3413Jenny W
Developers Tel Aviv Tel Aviv-YafoILDevelopers 3378James Lebowitz
Learn to code in 2019 LagosNGMembers 3293Adedipo Olagbegi
Utah Java Users Group Salt Lake CityUSTechnologists 3279Jason Porter
Tech Next PuneINTech Enthusiasts 3243Mukund Rajamannar
Denver Java Users Group DenverUSJava Developers 3211Matt Raible
NYC Tech Talks New YorkUSNYC Techies 3163Greg Whalin
Android In Asia SingaporeSGAndroid Developers & Users 3141Khang Toh
Java User Group Hamburg HamburgDEMitglieder 3088Uwe Sauerbrei
Memphis Technology User Groups MemphisUSTechies 3060Bryan Robinson
Silicon Valley Mobile Developer meetup Palo AltoUSdevs 3058Suyash Joshi
Mexico City JVM Group México CityMXDiscípulos JVM 3052JVM MX Organizer
IT w Warszawie WarsawPLMembers 3048Jadex
WSO2 - Sri Lanka ColomboLKMembers 3031WSO2
The Boston Java Meetup Group CambridgeUSJava Developers 3023Kaj Kandler
eBay Europe Technology #ebaytechtalk BerlinDEeBay Hackers 3018Katja Sommer
Tech Talk DC ArlingtonUSPolyglots 3010Doguhan Uluca
GOTO Nights Amsterdam AmsterdamNLGotos 3007Adele Carpenter
NYC Codecademy Group New YorkUSCoders 2920Codecademy Staff
Cleveland Big Data and Hadoop User Group ClevelandUSSuper Hadoopers 2916Doug Meil
ExpertTalks Manchester ManchesterGBExperts 2869Jon Dickinson
Java.IL - the Israeli Java Community Tel Aviv-YafoILDevelopers 2849Tomer Gabel
SoCal Node.js Los AngelesUSNoders 2810David Aktary
Boston Apache Spark User Group CambridgeUSSpahk Enthusiasts 2799Joseph Kambourakis
GDG Jakarta JakartaIDDevelopers 2798Putri Izzati
3Pillar Product Innovation Group NoidaINProduct Innovators 2742Kapil Dhiman
Chicago Java Users Group ChicagoUSJava Enthusiasts 2708Janine Patterson
Java User Group - Hyderabad HyderabadINJava Nizams 2702Stephen Chin
Dallas Google Developer Group DallasUSGoogle Devs 2697Jennifer Weingarten McGee
Polish Java User Group KrakówPLMembers 2694Konrad Malawski
Bay Area Mobile Mountain ViewUSBammers 2686A. Burkett
London Dev Community LondonGBDeveloper, Manager, Architect 2678David Gimelle
Warszawa Java User Group (Warszawa JUG) WarsawPLWJUGowicze 2662Tomasz Szymanski
Java User Group Argentina Buenos AiresARJavitos 2654Ramiro Rinaudo
Serverless San FranciscoUSMembers 2646Serverless User Group
Toronto Java Users Group TorontoCAMembers 2616Adib Saikali
DC Droids - DC Android Developers, Designers, Enthusiast WashingtonUSAndroid Fans 2613Prasanna Perera
IT Development Café AmsterdamNLDevelopment Heroes 2596Luca Prak
Paris.py (Python, Django & friends) ParisFRPythonistas 2591Sylvain Zimmer
Polyglot Languages & Runtimes (Java, JVM, nodejs, Swift...) BangaloreINMembers 2585Rajeev Palanki
JAVA Colombo ColomboLKMembers 2523WSO2
MATH View Algorithm Design (MATHVAD) Palo AltoUSAlglorist Coders 2518Suresh B Velagapudi
Atlanta Java Users Group AtlantaUSDevelopers 2503Vincent Mayers
life michael tel aviv Tel Aviv-YafoILMembers 2485Haim Michael
Jozi-JUG JohannesburgZAJVM Developers with Passion 2463Michael Williams
Developing with Data in San Francisco San FranciscoUSDevelopers 2459Scott Mitchell
GDG Kraków KrakówPLMembers 2432Mateusz Herych
Carbon Five LA Hack Nights Santa MonicaUSHackers 2424Carbon Five
Moscow Big Systems/Big Data MoscowRUMassive Scale Developers 2422Alexey Ragozin
GDG Baghdad BaghdadIQMembers 2413Safa Salwan
Ch'ti JUG LilleFRCh'ti juggers 2403Team Ch'ti JUG
DCJUG/Data Driven DC RestonUSMembers 2371Gray Herter
Bristech BristolGBBristechnologists 2337James Phillpotts
The Ahmedabad Java Meetup Group AhmedabadINCronies 2335Amit Raj Tyagi
Skyway Software Symposium MinneapolisUStech folk 2307Kevin Behrens
Android254 NairobiKEdroiders 2292Priest Tamre
Technology Job Seekers Greater Boston BostonUSProfessionals 2288Maureen
TLV - Android Academy Tel Aviv-YafoILAndroiders 2285Yonatan Levin
Java User Group Łódź ŁódźPLJugowicze 2261Stowarzyszenie JUG Łódź
Geeknight Coimbatore CoimbatoreINMembers 2259Selvakumar Natesan
Realm San FranciscoUSDevelopers 2257S. Nayyer
MadridJUG MadridESjuggers 2226Carlos Sierra
Women Who Code LA Culver CityUSCoders 2223Women Who Code
Philippine Android Developers Community ManilaPHDroids 2223Evan Dale Aromin
Wroclaw JUG Meetup WroclawPLDevelopers 2217Mateusz Glapinski
Paris Cassandra Meetup - by DataStax ParisFRCassandra Rebels 2209DataStax
Scala at the Sea SeattleUSMembers 2193Nick Elsberry
Duchess France Meetup ParisFRDuchess 2187Duchess France
Today Software Magazine Cluj-NapocaROdevelopers 2185Ovidiu Matan
Poland CodiLime Tech Talk WarsawPLLimes 2173CodiLime
Melbourne Java & JVM Users Group MelbourneAU0xCAFEBABEs 2159Kon Soulianidis
Android Nigeria Community LagosNGMembers 2148Peter Ekene Eze
Montréal JUG MontréalCAMembers 2145Montreal JUG
The Iron Yard - Charleston CharlestonUSMembers 2123Tom Wilson
Denver Open Source Users Group DenverUSMembers 2084Mike Barker
Ciklum Ukraine/Belarus knowledge sharing community KyivUAIT geeks 2077Julia
London Mobile & Web App Development Meetup LondonGBMembers 2072Raj
Madison Area Software Developers Meetup Group MadisonUSSoftware Developers 2054Paul Miller
Women Who Code Manila ManilaPHAwesome Women Coders 2045Women Who Code
GDG Jalandhar JalandharINCommunity Member 2041Nitika Rajput
Singapore Spring User Group SingaporeSGSpring Developers 2040Sergiu Bodiu
DevTalk LA Los AngelesUSMembers 2023Ken Dempster
DataKRK (formerly Cracow Hadoop User Group) KrakówPLMembers 2019Przemek Maciolek
Perú Java User Group LimaPEMembers 2013Eddú Meléndez
javaBin Oslo OsloNOMembers 2011Dervis M
ThinkJava Kharkiv KharkivUAУчастники 2004NIX Solutions ltd
Women Who Code Bangalore BangaloreINCoders 1997Women Who Code
GeoDev Meetup Group - Northeast WashingtonUSMembers 1983Amy Niessen
Java Usergroup Berlin-Brandenburg BerlinDEJavaianer 1980Joerg M.
Algorithms and Data Structures New YorkUSDevelopers 1971Maggie
Warsaw Hadoop User Group (Poland) WarsawPLWHUGers 1969Adam Kawa
OWASP Northern Virginia Chapter RestonUSMembers 1967OWASP Foundation
Learning Android Development San FranciscoUSMembers 1953Nathan Esquenazi
Google Developers Group Oslo (GDG) OsloNOMembers 1952Thomas Bassetto
Greetings, SVBBDev - BlackBerry App Developers! Santa ClaraUSSVBBDev - BB App Developers 1944Ping Bartley
Austin Programmer Community AustinUSProgrammers & Developers 1941George Pazdral
Women Who Code Chicago ChicagoUSCoders 1910Women Who Code
St. Louis Java User's Group Saint LouisUSMembers 1907Bruce Alspaugh
Tech Talks at Meetup New YorkUSTech Talks @ Meetup 1905Evan Estola
Tech Talks Israel Tel Aviv-YafoILMembers 1898Daniel Schwartzer
Detroit Java User Group DetroitUSJUG Members 1886Matt Schuetze
Pune Spring Developers PuneINSpringDevs 1886Imteyaz Ahmad
Azure Israel Tel Aviv-YafoILMembers 1883Israeli Azure
SoundCloud Tech Meetups - Berlin BerlinDEpeople 1861Vincent Garrigues
Android Meetup Bogotá BogotáCODesarrolladores Android 1856Santiago Carrillo
Guadalajara Java User Group ZapopanMXJava Programmers 1855Christian Gomez
DomCode UtrechtNLCoders 1850Lucas van Lierop
Silicon Valley Cloud Foundry User Group Palo AltoUSCloud Founders 1847Dave Nielsen
Graph Database - San Francisco San FranciscoUSGraphistas 1845Neo4j
Bot Builder Meetup - Bangalore BangaloreINTechies/Founders 1820Malay Warankar
Bash! BelfastGBMembers 1815Tara Simpson
Java Vienna ViennaATMembers 1809Dominik Dorn
Trójmiasto Java User Group GdanskPLJava Geeks 1804Kuba Marchwicki
The Iron Yard - Indianapolis IndianapolisUSLearners 1786Aaron Kopel
Clean Code Alliance Tel Aviv-YafoILClean Coders 1769Itzik Saban
Montana Programmers KalispellUSMontana Programmers 1768Wes
Amsterdam Java User Group AmsterdamNLAmsterdam JUGers 1767Vladimir Dejanović
All Things Web Tech ChicagoUSTech Leaders 1764brian rodriguez
it.roche.pl WarsawPLIT Professionals 1754Aleksandra Pagorska
Cleveland #learntocode Group ClevelandUStechies 1729Tech Elevator
London Code Dojo LondonGBDevelopers 1721@sleepyfox
GDG Cochin KochiINGDG Dev Member 1721Ninto Anto
Phx-Starters: Phoenix Startup Technology Round Table PhoenixUSPhx-Starters 1716Michael Fitzgerald
New York City Real-Time Stream Processing User Group New YorkUSStorm Chasers 1706Eugene Dvorkin
Lagos Software Engineering Group LagosNGMembers 1706Kehinde Adewusi
ExpertTalks Bengaluru BangaloreINExperts 1693Vishwas Bhagath
Pune Java User Group PuneINJava Developers 1691Saager Mhatre
Minnesota Azure User Group MinneapolisUSAzure Users 1690Tim Plas
Seattle Data Engineering SeattleUSData Engineers 1688Galvanize
Los Angeles Android Developers + Mobile Developer Meetup Beverly HillsUSAndroid Developers 1688Dakotta
Javaforum Göteborg GöteborgSEJava coders 1685Tomas Trolltoft
ExpertTalks Portugal LisbonPTExperts 1682Nuno Marques
GDG Philadelphia PhiladelphiaUSAllies 1675John Mahoney
Utrecht Java User Group UtrechtNLUtrecht JUGers 1666Thodoris Bais