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

Name City Country Focus Members Contact Name
Virtual Java User Group LondonGBvJUGers 16348Simon Maple
Google Developer Group Silicon Valley Mountain ViewUSGoogle Developers 13882Peter Mooshammer
Developers-BR São PauloBRDevs 13186Valerio Ferreira
Tech in Motion Events: San Francisco San FranciscoUSTechnologists 13128Mandy Ivy
Tech in Motion: Washington DC ArlingtonUSTechnologists 11730Mandy Walker
The New York City Java Meetup Group New YorkUSJava enthusiasts 11586Dario Laverde
Fullstack Developers Israel Tel Aviv-YafoILFullstackers 11098Lior Kanfi
New York Software Engineers (NYSE) New YorkUSSoftware Engineers 8835Michael Latulippe
Tech in Motion: Silicon Valley San JoseUSTechnologists 8761Mandy
Istanbul Coders IstanbulTRCoder 7859Selim Öber
The Agile Roundabout LondonGBAgile enthusiasts 7727Phill Bateman
Tech in Motion: Los Angeles Los AngelesUSTechnologists 7725Mandy
Tech In Motion: Orange County IrvineUSTechnologists 7461Mandy Walker
Tech in Motion: Philadelphia PhiladelphiaUSTechnologists 7368Mandy
LJC - London Java Community LondonGBJava Developers 7037Barry Cranford
Hacker Hours New YorkUSHaxors 6818Aidan Feldman
Silicon Valley Android Developers Palo AltoUSAndroid Developers & Users 6786davidcao01 SVE.io
Google Developer Group San Francisco @sf_gdg San FranciscoUSGoogle Developers 6693James Cha
Silicon Valley Java User Group Mountain ViewUSJava Developers 6556Kevin Nilson
New York MongoDB User Group New YorkUSMembers 6528MongoDB
The San Francisco Java User Group San FranciscoUSJava Developers 6339Pieter Humphrey
GDG Ahmedabad AhmedabadINTechnology Explorers 6098Paresh Mayani
Bangalore JAVA User Group (BangaloreJUG) BangaloreINjuggie'z 5929Ranganath.S
Skills Matter - X Matters Keynote Series - Developer Events LondonGBsoftware craftspeople 5878Ariel - Skills Matter
Jforum Stockholm StockholmSEMembers 5763Mattias Karlsson
London App Brewery LondonGBApp Makers 5679Philipp Muellauer
ThoughtWorks Geek Night - NCR DelhiINMembers 5309Avinash Chugh
Tech Interviews and Competitive Programming Mountain ViewUSSolution Finders 5292Jonathan R.
RIoT RaleighUSRIoTers 5199Tom Snyder
¿Por qué aprender a Programar? BogotáCONuevos Programadores 4954Cesar
Bay Area Hackathons San FranciscoUSHackers 4945Raj
Arte e Programação São PauloBRPessoas 4888Alexandre Villares
allegro Tech WarsawPLTechs 4849Janek P.
The San Francisco Android GDG San FranciscoUSAndroid Developers 4717Ty Smith
Find a Tech Job LondonGBCareer Networkers 4675Samantha hepburn
Amazon Web Services - Security, Virginia (and metro DC area) HerndonUSMembers 4673Kelly
London Software Craftsmanship Community LondonGBSoftware Crafters 4535Sandro Mancuso
New York Android Developers New YorkUSMembers 4529Kevin Galligan
GOTO Nights CPH CopenhagenDKMembers 4457Tine Grarup
GDG Cambridge, Boston and Metro, Google Developer Group CambridgeUSMembers 4332Steven Max Patterson
Berlin Hack and Tell BerlinDEHackers 4325Keith Corwin
The Future is made in Javascript Tel Aviv-YafoILJavascripters 4303Yaron Biton
AI Users Group UK LondonGBAI Specialists 4237Dan Harvey
Hyderabad Hadoop, Data science, AWS and IOT Group HyderabadINMembers 4212Arun Sirimalla
Neo4j - London User Group LondonGBPeople 4187Neo4j
Bogotá JVM Meetup BogotáCOdevelopers and entrepreneurs 4126Julian Espinel
Java Meetup - Bangalore BangaloreINDukes 4114Ganesh Samarthyam
Women Who Code Berlin BerlinDEMembers 4058Women Who Code
Learn to code in 2019 LagosNGMembers 4050Adedipo Olagbegi
Stacja IT Warszawa WarsawPLMembers 4025Maria Nowakowska
GDG Paris ParisFRParticipants 4020Alain Regnier
Paris Android User Group ParisFRMembres 3989Stephane Guerin
Bay Area Android Developer San FranciscoUSDevelopers 3988Stephan Branczyk
Developer User Group JohannesburgZASoftware Developers 3973Robert MacLean
By ThoughtWorks Tech Talk Series MelbourneAUMembers 3966Karen Dumville
Istanbul Spring Meetup IstanbulTRMembers 3893Erdem Gunay
Melbourne Web Developers MelbourneAUDevs 3795Emma
AWS Seattle | Official Events SeattleUSMembers 3750Ross Barich
São Paulo Java Meetup São PauloBRJaveiros 3739Bruno Marinho
Seattle Android Developers SeattleUSAndroid Developers 3683Chris Pick
Istanbul Java User Group (JUG) - @jug_istanbul IstanbulTRMembers 3670Altug Bilgin Altintas
Delhi MongoDB User Group DelhiINMembers 3624MongoDB
ny-scala New YorkUSScala Types 3554Dustin Whitney
Boston Software Engineers BostonUSSoftware Engineers 3536Michael Latulippe
Bay Area Full Stack Mountain ViewUSnvirters 3521Vikram Dham
London Scala Users' Group LondonGBEnthusiasts 3513Andy Hicks
GOTO Nights - London, UK LondonGBFriends 3509Maria Wennestam
Code Oregon PortlandUSStudents 3409Jenny W
Developers Tel Aviv Tel Aviv-YafoILDevelopers 3380James Lebowitz
Utah Java Users Group Salt Lake CityUSTechnologists 3374Jason Porter
Tech Next PuneINTech Enthusiasts 3299Mukund Rajamannar
Denver Java Users Group DenverUSJava Developers 3295Matt Raible
IT w Warszawie WarsawPLMembers 3248Jadex
ExpertTalks Manchester ManchesterGBExperts 3225Jon Dickinson
Java User Group Hamburg HamburgDEMitglieder 3185Uwe Sauerbrei
Memphis Technology User Groups MemphisUSTechies 3179Bryan Robinson
Mexico City JVM Group México CityMXDiscípulos JVM 3179JVM MX Organizer
NYC Tech Talks New YorkUSNYC Techies 3154Greg Whalin
Android In Asia SingaporeSGAndroid Developers & Users 3143Khang Toh
GOTO Nights Amsterdam AmsterdamNLGotos 3096GOTO Nights
Tech Talk DC ArlingtonUSPolyglots 3078Doguhan Uluca
WSO2 - Sri Lanka ColomboLKMembers 3066WSO2
Silicon Valley Mobile Developer meetup Palo AltoUSdevs 3059Suyash Joshi
Java.IL - the Israeli Java Community Tel Aviv-YafoILDevelopers 3012Haim Yadid
eBay Europe Technology #ebaytechtalk BerlinDEeBay Hackers 3005Katja Sommer
The Boston Java Meetup Group CambridgeUSJava Developers 3002Kaj Kandler
Cleveland Big Data and Hadoop User Group ClevelandUSSuper Hadoopers 2980Doug Meil
NYC Codecademy Group New YorkUSCoders 2924Codecademy Staff
GDG Jakarta JakartaIDDevelopers 2902Putri Izzati
IT Development Café AmsterdamNLDevelopment Heroes 2854Luca Prak
SoCal Node.js Los AngelesUSNoders 2836David Aktary
Boston Apache Spark User Group CambridgeUSSpahk Enthusiasts 2822Joseph Kambourakis
Java User Group - Hyderabad HyderabadINJava Nizams 2805Stephen Chin
Dallas Google Developer Group DallasUSGoogle Devs 2776Jennifer Weingarten McGee
Polish Java User Group KrakówPLMembers 2770Konrad Malawski
Warszawa Java User Group (Warszawa JUG) WarsawPLWJUGowicze 2760Tomasz Szymanski
Chicago Java Users Group ChicagoUSJava Enthusiasts 2758Janine Patterson
3Pillar Product Innovation Group NoidaINProduct Innovators 2743Kapil Dhiman
Serverless San FranciscoUSMembers 2730Serverless User Group
Toronto Java Users Group TorontoCAMembers 2723Adib Saikali
Paris.py (Python, Django & friends) ParisFRPythonistas 2713Sylvain Zimmer
London Dev Community LondonGBDeveloper, Manager, Architect 2678David Gimelle
Bay Area Mobile Mountain ViewUSBammers 2674A. Burkett
Polyglot Languages & Runtimes (Java, JVM, nodejs, Swift...) BangaloreINMembers 2670Rajeev Palanki
Java User Group Łódź ŁódźPLJugowicze 2668Stowarzyszenie JUG Łódź
Java User Group Argentina Buenos AiresARJavitos 2664Ramiro Rinaudo
GDG Kraków KrakówPLMembers 2660Mateusz Herych
Moscow Big Systems/Big Data MoscowRUMassive Scale Developers 2650Alexey Ragozin
JAVA Colombo ColomboLKMembers 2645WSO2
DC Droids - DC Android Developers, Designers, Enthusiast WashingtonUSAndroid Fans 2607Prasanna Perera
Atlanta Java Users Group AtlantaUSDevelopers 2559Vincent Mayers
life michael tel aviv Tel Aviv-YafoILMembers 2554Haim Michael
Jozi-JUG JohannesburgZAJVM Developers with Passion 2531Michael Williams
MATH View Algorithm Design (MATHVAD) Palo AltoUSAlglorist Coders 2509Suresh B Velagapudi
Android254 NairobiKEdroiders 2503Priest Tamre
Ch'ti JUG LilleFRCh'ti juggers 2492Team Ch'ti JUG
Geeknight Coimbatore CoimbatoreINMembers 2462Selvakumar Natesan
Developing with Data in San Francisco San FranciscoUSDevelopers 2450Scott Mitchell
DCJUG/Data Driven DC RestonUSMembers 2449Gray Herter
GDG Baghdad BaghdadIQMembers 2444Safa Salwan
Bristech BristolGBBristechnologists 2420James Phillpotts
Carbon Five LA Hack Nights Santa MonicaUSHackers 2416Carbon Five
Women Who Code Bangalore BangaloreINCoders 2412Women Who Code
Philippine Android Developers Community ManilaPHDroids 2376Evan Dale Aromin
Women Who Code LA Culver CityUSCoders 2365Women Who Code
The Ahmedabad Java Meetup Group AhmedabadINCronies 2352Amit Raj Tyagi
Wroclaw JUG Meetup WroclawPLDevelopers 2347Mateusz Glapinski
Skyway Software Symposium MinneapolisUStech folk 2336Kevin Behrens
MadridJUG MadridESjuggers 2336Carlos Sierra
TLV - Android Academy Tel Aviv-YafoILAndroiders 2312Yonatan Levin
Poland CodiLime Tech Talk WarsawPLLimes 2298CodiLime
Boston Data Science Career #ODSC BostonUSProfessionals 2294Sheamus
Montréal JUG MontréalCAMembers 2260Montreal JUG
Scala at the Sea SeattleUSMembers 2252Nick Elsberry
Duchess France Meetup ParisFRDuchess 2245Duchess France
Realm San FranciscoUSDevelopers 2245Morgan Contreras
Today Software Magazine Cluj-NapocaROdevelopers 2242Ovidiu Matan
Android Nigeria Community LagosNGMembers 2240Peter Ekene Eze
London Code Skill Buddy LondonGBMembers 2213Raj
Melbourne Java & JVM Users Group MelbourneAU0xCAFEBABEs 2210Kon Soulianidis
GDG Jalandhar JalandharINCommunity Member 2206Nitika Rajput
Paris Cassandra Meetup - by DataStax ParisFRCassandra Heroes 2198DataStax
Ciklum Ukraine/Belarus knowledge sharing community KyivUAIT geeks 2159Julia
Women Who Code Manila ManilaPHAwesome Women Coders 2155Women Who Code
Denver Open Source Users Group DenverUSMembers 2132Mike Barker
javaBin Oslo OsloNOMembers 2115Dervis M
DataKRK (formerly Cracow Hadoop User Group) KrakówPLMembers 2114Przemek Maciolek
The Iron Yard - Charleston CharlestonUSMembers 2110Tom Wilson
Madison Area Software Developers Meetup Group MadisonUSSoftware Developers 2095Paul Miller
Java Usergroup Berlin-Brandenburg BerlinDEJavaianer 2086Joerg M.
Pune Spring Developers PuneINSpringDevs 2082Imteyaz Ahmad
Women Who Code Chicago ChicagoUSCoders 2071Women Who Code
Perú Java User Group LimaPEMembers 2068Eddú Meléndez
DevTalk LA Los AngelesUSMembers 2062Ken Dempster
Singapore Spring User Group SingaporeSGSpring Developers 2054Sergiu Bodiu
OWASP Northern Virginia Chapter RestonUSMembers 2042OWASP Foundation
Azure Israel Tel Aviv-YafoILMembers 2022Israeli Azure
Android Meetup Bogotá BogotáCODesarrolladores Android 2017Santiago Carrillo
ThinkJava Kharkiv KharkivUAУчастники 2013NIX Solutions ltd
Warsaw Data Tech Talks (Poland) WarsawPLWarsawDataTT members 2011Adam Kawa
GeoDev Meetup Group - Northeast WashingtonUSMembers 1997Amy Niessen
Google Developers Group Oslo (GDG) OsloNOMembers 1995Thomas Bassetto
St. Louis Java User's Group Saint LouisUSMembers 1969Bruce Alspaugh
Algorithms and Data Structures New YorkUSDevelopers 1968Alexey Potapov
Guadalajara Java User Group ZapopanMXJava Programmers 1964Christian Gomez
Learning Android Development San FranciscoUSMembers 1962Nathan Esquenazi
Austin Programmer Community AustinUSProgrammers & Developers 1958George Pazdral
Utrecht Java User Group UtrechtNLUtrecht JUGers 1957Thodoris Bais
Amsterdam Java User Group AmsterdamNLAmsterdam JUGers 1948Vladimir Dejanović
Greetings, SVBBDev - BlackBerry App Developers! Santa ClaraUSSVBBDev - BB App Developers 1945Ping Bartley
Detroit Java User Group DetroitUSJUG Members 1927Matt Schuetze
DomCode UtrechtNLCoders 1924Lucas van Lierop
Java Vienna ViennaATMembers 1923Dominik Dorn
GDG Cochin KochiINGDG Dev Member 1912Ninto Anto
Tech Talks Israel Tel Aviv-YafoILMembers 1900Daniel Schwartzer
it.roche.pl WarsawPLIT Professionals 1899Aleksandra Pagorska
GOTO Nights Chicago ChicagoUSGOTO'ers 1898Bianca Legorreta
Tech Talks at Meetup New YorkUSTech Talks @ Meetup 1897Evan Estola
Serverless Turkey IstanbulTRMembers 1887Serverless User Group
ExpertTalks Portugal LisbonPTExperts 1882Nuno Marques
Trójmiasto Java User Group GdanskPLJava Geeks 1865Kuba Marchwicki
SoundCloud Tech Meetups - Berlin BerlinDEpeople 1863Vincent Garrigues
Bash! BelfastGBMembers 1862Tara Simpson
Silicon Valley Cloud Foundry User Group Palo AltoUSCloud Founders 1853Dave Nielsen
Graph Database - San Francisco San FranciscoUSGraphistas 1845Neo4j
Clean Code Alliance Tel Aviv-YafoILClean Coders 1825Itzik Saban
Bot Builder Meetup - Bangalore BangaloreINTechies/Founders 1823Malay Warankar
GDG Rabat RabatMADevelopers 1809gdg rabat
WroclawIT WroclawPLMembers 1804Patka
Cleveland #learntocode Group ClevelandUStechies 1789Tech Elevator
GDG Lille LilleFRMembres 1784Fanny Demey
Montana Programmers KalispellUSMontana Programmers 1783Wes
Minnesota Azure User Group MinneapolisUSAzure Users 1782Tim Plas
ExpertTalks Bengaluru BangaloreINExperts 1777Vishwas Bhagath
Lagos Software Engineering Group LagosNGMembers 1777Kehinde Adewusi
The Iron Yard - Indianapolis IndianapolisUSLearners 1770Aaron Kopel
All Things Web Tech ChicagoUSTech Leaders 1763brian rodriguez
Javaforum Göteborg GöteborgSEJava coders 1759Tomas Trolltoft
Phx-Starters: Phoenix Startup Technology Round Table PhoenixUSPhx-Starters 1751Michael Fitzgerald
Seattle Data Engineering SeattleUSData Engineers 1720Galvanize