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

Name City Country Focus Members Contact Name
The SF JavaScript Meetup San FranciscoUSJS Hackers 13375Dave Nugent
Women Who Code NYC New YorkUSBadass Female Coders 13101Women Who Code
Pune Developer's Community PuneINPDC 8817Suyog
London JavaScript Community LondonGBJSLovers 8382luca mezzalira
Uber Engineering Events - San Francisco San FranciscoUSEngineering Enthusiasts 8311Uber Engineering
Build with Code - New York City New YorkUSEngineers 7635Jenny Mith
Expert Talks Pune PuneINTech Enthusiasts 7620Ashish
Toronto JavaScript TorontoCAMembers 7402Paul Dowman
ReactJS San Francisco Bay Area meetup San FranciscoUSDevelopers 7105devon lindsey
JavaScript Israel Tel Aviv-YafoILJavaScripters 6961Shai Reznik
Founders and Coders LondonGBcollaborators 6847Dan Sofer
NY JavaScript New YorkUSJavaScripters 6572Jovena Whatmoor
Ironhack Madrid MadridESIronhackers 6510Pablo Onieva
NYC Nodejs New YorkUSNodesters 6164Peter Bell
Hack Reactor: Learn to Code San FranciscoUSEngineers 5932Tyler Lambe
Women Who Code Silicon Valley SunnyvaleUSCoders 5775Women Who Code
JavaScript Meetup BangaloreINJS Hackers 5340Ganesh Samarthyam
Paris.js ParisFRJavaScripteurs 5308Pierrick Paul
Node.js Paris ParisFRNodeurs 5158Etienne Folio
GDG Lagos LagosNGMembers 5108Femi TAIWO
San Diego JavaScript Community San DiegoUSJavaScripters 4873Todd Bashor
SingaporeJS SingaporeSGdevelopers 4709Tim Oxley
Devhub Toronto TorontoCADevelopers 4685Emma Cuddy
JavaScript São Paulo São PauloBRJavascript developers 4666Erick Wendel
WarsawJS WarsawPLMembers 4604Piotr Zientara
Coderplex Community HyderabadINCoders 4575Kapil Dutta
MedellínJS MedellínCOJavaScripters 4571Julián Duque
Real World React San FranciscoUSDevelopers 4373Benjamin Dunphy
Modern Web Mountain ViewUSMembers 4326Tracy
js-montreal - montreal's javascript user group MontréalCAJavascripters 4272Bruno Carriere
SFNode San FranciscoUSNode Users 4182Dan Shaw
Node Sydney SydneyAUnoders 4154James Richardson
Women Who Code Berlin BerlinDEMembers 4058Women Who Code
Node.js Club SF San FranciscoUSMembers 4057Matt Pardee
Eventloop México CityMXDesarrolladores 3917Jeduan Cornejo
sthlm.js StockholmSEJavaScripters 3871Jonny Strömberg
AngularSP São PauloBRsuperheroes 3818William Grasel
Javascript Hyderabad HyderabadINjS'ers 3708Harish
Node.js Madrid MadridESasíncronos 3665Alex Fernández
Jakarta Javascript User Group JakartaIDJavaScript Ninja 3600Hengki Sihombing
JavaScript MN MinneapolisUSJavaScripters 3596Randall Meeker
Angular Paris ParisFRAngularians 3570Patrick Aljord
IBM Code London LondonGBCoders 3542Mo Haghighi
JSLovers DelhiINJSLovers 3528Neha Sharma
Meetup.js Buenos AiresARJavascripters 3511Juan Pablo Saraceno
BarcelonaJS BarcelonaESJavaScripters 3485Tudor
React en Buenos Aires Buenos AiresARreactors 3441sebasjm
KrakowJS KrakówPLJS pros 3431Krzysztof Kula
js.la - The Los Angeles JavaScript meetup Santa MonicaUSJavaScriptianados 3423David Guttman
React Chicago ChicagoUSMembers 3413Bill Gloff
Code Oregon PortlandUSStudents 3409Jenny W
UtahJS Salt Lake CityUSJavaScriptafarians 3385Kip Lawrence
Seattle React.js SeattleUSMembers 3363Justin Soliz
Coders in Rio Rio de JaneiroBRCoders 3362Rafael Cruz
Chicago Node.js ChicagoUSMembers 3353Mike Hostetler
NodeBR - São Paulo São PauloBRnoders 3352Erick Wendel
JSLovers-Bengaluru BangaloreINJSLovers 3300Neha
Node.js Israel Tel Aviv-YafoILNoders 3290Lior Kesos
Manila JavaScript ManilaPHJS Developers 3286Thomas Laughlin
Women Who Code Portland PortlandUSCoders 3248Women Who Code
East Bay JavaScript Meetup Group OaklandUSJS Hackers 3202Dan McAulay
Seattle Node.js SeattleUSNode-jsers 3183Ryan Roemer
Node.js Denver/Boulder/Ft. Collins DenverUSMembers 3160Brooks Patton
DhakaJS DhakaBDMembers 3157Md. Azharul Islam
AngularMadrid MadridESAngulares 3107Juanfran
Portland ReactJS PortlandUSreactivists 3048Jason Brown
Node.js Dilli DelhiINHackers 3039Anup Bishnoi
Geek97 DelhiINGeeks 2954Dhananjay Kumar
JavaScriptLA Meetup Los AngelesUSJavaScript Ninjas 2945VJ
Women Who Code Dallas/Ft. Worth DallasUSCoders 2935Women Who Code
Jakarta Learns Programming JakartaIDLearners 2928Sigit Prayoga
Frontend Developer Meetup Amsterdam AmsterdamNLFrontend Developers 2924Frontend Love
HTML5 + JS Ciudad de México México CityMXMXL5 2917Alejandro
NodersJS SantiagoCLJavascript@s 2911Ender Bonnet
JSTANBUL: İstanbul JavaScript User Group IstanbulTRNinjas 2906Fatih Kadir Akın
London Node.js User Group LondonGBMembers 2899Adam Davis
IT Development Café AmsterdamNLDevelopment Heroes 2854Luca Prak
Node.js Meetup Berlin BerlinDEJavaScripters 2847Andreas Lubbe
hackcolab BarcelonaESMembers 2845David Pich
SoCal Node.js Los AngelesUSNoders 2836David Aktary
JavaScript KC Kansas CityUSDevelopers 2833Josh Durham
AmsterdamJS AmsterdamNLJavaScripters 2828Robert Haritonov
Austin Node.js AustinUSnoders 2821Mike McNeil
node.dc WashingtonUSNode programmers 2794Andrew Dunkman
Atlanta Nodejs Developers AtlantaUSNode.lers 2771Ryan Connelly
Hack Reactor NYC New YorkUSFuture coders 2770Tyler Lambe
FranceJS ParisFRjavascripters 2748Julien Bouquillon [revolunet]
Serverless San FranciscoUSMembers 2730Serverless User Group
NashJS NashvilleUSmembers 2728Will
Web Developers Community Ra'ananaILMembers 2728Ori Calvo
vienna.js Vienna JavaScript User Group ViennaATJavaScripters 2708Roland Schütz
Phoenix JavaScript PhoenixUSJavaScript Enthusiasts 2674Sal Aiello
Ironhack Paris ParisFRIronhackers 2671Eva Peris
Polyglot Languages & Runtimes (Java, JVM, nodejs, Swift...) BangaloreINMembers 2670Rajeev Palanki
The Digital Pond LondonGBDigital Ponderers 2660Siji Onabanjo
AngularTO TorontoCAMembers 2646Nick Van Weerdenburg
Triangle JavaScript DurhamUSMembers 2638Kyle Buchanan
Free Code Camp Portland PortlandUSCampers 2621Brigette Eckert
life michael tel aviv Tel Aviv-YafoILMembers 2554Haim Michael
Serverless London LondonGBMembers 2535Serverless User Group
Javascript Ankara AnkaraTRJavaScript Tutkunları 2533Ustun Ozgur
The JS Roundabout LondonGBJS Enthusiasts 2527Phill Bateman
ng-sydney SydneyAUAngular Developers 2522Meligy
freeCodeCamp - Houston HoustonUSCampers 2496Jason Ephraim
GreeceJS AthensGRJavaScript devs 2479Elias Niaos
Boston Node BostonUSMembers 2445Brian Sodano
Hyderabad Javascript Group HyderabadIN_javascripters 2440Ran.ga.na.than
South Bay JavaScript Meetup Mountain ViewUSjavascraps 2432Jackie Ho
Women Who Code Bangalore BangaloreINCoders 2412Women Who Code
React Amsterdam AmsterdamNLMembers 2412Robert Haritonov
Guadalajara JS GuadalajaraMXJavascripters 2404Orlando Del Aguila Febres
LyonJS LyonFRJS lovers 2398Paul Mougel
Ottawa JavaScript OttawaCAMembers 2396Owain
DigitalCrafts | Learn to Code in Atlanta AtlantaUSBuilders 2395Max M.
SeattleJS Hackers SeattleUSHackers 2380Sam Eubank
Client Side Technologies BangaloreINTechies 2343Gautham Pai
Skyway Software Symposium MinneapolisUStech folk 2336Kevin Behrens
Node Melbourne MelbourneAUNodes 2307Andrey Sidorov
EgyptJS CairoEGMembers 2294Mohamed Shaban
BayNode - The Bay Area Node.js Meetup Mountain ViewUSCallbacks 2292Maureen
MakerSpace Charlotte CharlotteUSMakers 2279Benjamin Gatti
Modern Web (Triangle) RaleighUSMembers 2273Tracy
DenverScript DenverUSScriptonites 2271Matt Webb
London Javascript LondonGBDevs 2246christoffer noring
Modern Web UI Palo AltoUSMembers 2244Tracy
Learn To Code Phoenix PhoenixUSMembers 2235Galvanize
Mentorship Saturdays PortlandUSMembers 2226Bradley Kouchi
Uncoded | Long Beach Tech Meetups & Events Long BeachUSMembers 2224Mike Stewart
Dublin Node.js Meetup DublinIENoders 2214Sean Walsh
Lima NodeJS Meetup LimaPENodistas 2208Rein Petersen
Dublin - Coder Forge DublinIECoders 2208Enda
Learn to Code New York New YorkUSCoders 2206Galvanize
Vuejs Paris ParisFRVuers 2204Eduardo
Front End Orlando CodePen OrlandoUSFront End Orlando CodePenners 2198David K
NodeUA KyivUAsoftware engineers 2194Timur Shemsedinov
CopenhagenJS CopenhagenDKpeople 2192Kevin Simper
PDXnode PortlandUSNodesters 2183Ben Michel
ReactJS and Friends PuneINMembers 2177Vipul A M
React Vancouver Meetup VancouverCAMembers 2169Eric Kim
Cambridge Developer Entrepreneur Networking Full Stack CambridgeUSMembers 2167Aaron K
JavaScript Lab Paris ParisFRJS Hackers 2155Community Hackages
BudapestJS BudapestHUJavaScript Ninjas 2143Norbert Sram
BandungJS BandungIDMembers 2124Zufrizal Yordan
Azure Dublin Meetup DublinIEAzurees 2120Bryan Conneely
Angular Nigeria (ng)² LagosNGMembers 2074Kelechi Oti
Docker - Kubernetes - Openshift Hyderabad HyderabadINMembers 2074Chakradhar Rao Jonagam
T.O.J. - Tales Of JavaScript San FranciscoUSMembers 2058Ann Burkett
Colombo JS Meetup ColomboLKdevelopers 2048Pasindu De Silva
The JavaScript Austin Meetup Group AustinUSJavaScripters 2041Johnathan Hebert
Codeworks - Barcelona BarcelonaESCoders 2027Eloi Alcaide
opensanca São CarlosBRMembros 2024Lucas Marques
Azure Israel Tel Aviv-YafoILMembers 2022Israeli Azure
Fullstack Developers New YorkUS{{developers}} 2014Alexander David
JS Belgrade Meetup BelgradeRSMembers 1983Slobodan Stojanovic
Uszanowanko Programowanko GliwicePLDoges 1964Marcin Mazurek
Portland JavaScript Admirers PortlandUSAdmirers 1957Benjamin Herson
Angular X Paris ParisFRnew generation Angularians 1953Bertrand Piselli
React Delhi NCR DelhiINMembers 1952Anoop Gupta
Node.JS Boston BostonUSMembers 1946Freedom Dumlao
I Teach You Programming, So You Teach Me English! TokyoJPMembers 1943Hiroaki Yasutomo
London HalfStack LondonGBSoftware Engineers 1933Dylan Schiemann
DC Hack and Tell WashingtonUSHackers 1929Travis Hoppe
MilwaukeeJS MilwaukeeUSJavaScripters 1920Roman Reynebeau
Bristol JS BristolGBMembers 1890Andrew McGregor
Serverless Turkey IstanbulTRMembers 1887Serverless User Group
Boulder JS BoulderUSMembers 1880Estella Gonzalez Madison
React Medellín MedellínCOMiembros 1879Alejandro Nanez
GolangNYC New YorkUSGophers 1874Gray Herter
BucharestJS BucharestROJS Hackers 1873Ciprian Borodescu
Code's Cool Dallas AddisonUScodescoolers 1863Steven Gangstead
Bay Area JavaScript Interview Prep Meetup SunnyvaleUSProblem Solver 1863Jack Wong
Philadelphia JavaScript Developers PhiladelphiaUSJS Developers 1862Beth Dickerson
Ahmedabad AngularJS AhmedabadINMembers 1855Dipesh Patel
require('lx') - The JavaScript meetup in Lisbon LisbonPTJavaScripter 1810João Pinto Jerónimo
Milano Frontend MilanoITFrontenders 1805Alessandro Muraro
Austin Coders & Hackers by The Tech^map AustinUSCoders & Hackers 1791Johan Borge
Node.js Jakarta JakartaIDnodejs farmers 1790Lukluk Luhuring Santoso
Utah Node.js - Salt Lake City Salt Lake CityUSNode Ninjas 1788Aaron Seth Madsen
HH.js HamburgDEJavaScripters 1786Daniel Dembach
Mumbai JavaScript Meetup MumbaiINJavascriptors 1785Bilal Budhani
Node.js Philly PhiladelphiaUSNodes 1781Leomar Durán
Meteor Egypt CairoEGMeteorites 1779Meteor Community Meetups
Node.js and IBM Cloud Meetup BangaloreINMembers 1774Param Rao
React - Rio de Janeiro Rio de JaneiroBRMembros 1774guilherme de azevedo martins
All Things Web Tech ChicagoUSTech Leaders 1763brian rodriguez
BA Node.js Meetup Buenos AiresARNoders 1746Node Buenos Aires
Angular Belgium BrusselsBEAngularian 1740Yassine Gayl
FullStack Cluj Cluj-NapocaROMembers 1736Paul Chirila
Beer.js Buenos Aires Buenos AiresARJavaScripters 1731Nicolás Gabriel Bevacqua
Hong Kong JavaScript and Node.js Hong KongHKDevelopers 1727Kevin Bluer
New York JavaScript Study Group New YorkUSJavascript Users 1718Robert LaMarca
Chennai JavaScript Meetup ChennaiINMembers 1712Abhishek Yadav
MunichJS – JavaScript User Group MünchenDEMembers 1698Béla Varga
JSHeroes Meetups Cluj-NapocaROheroes 1683Paul BRIE
Austin Software Engineers & App Developers AustinUSSoftware Engineers/Developers 1677Chris Requena
Tech nights in Medellín MedellínCOMembers 1670Sebastian Miranda
charmCityJs BaltimoreUSJavaScripters 1661Karl Groves
Freelance Talks : Les Apéros Freelances & Tips ParisFRFreelances 1636FreelanceRepublik
Dev.IL Tel Aviv-YafoILMembers 1635Tom Teman
Sydney Progressive Web Apps | SydPWA SydneyAUMembers 1630Chris A James