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 13277Dave Nugent
Women Who Code NYC New YorkUSBadass Female Coders 12621Women Who Code
Pune Developer's Community PuneINPDC 8172Suyog
London JavaScript Community LondonGBJSLovers 8158luca mezzalira
Uber Engineering Events - San Francisco San FranciscoUSEngineering Enthusiasts 7748Uber Engineering
ExpertTalks Pune PuneINTech Enthusiasts 7432Ashish
Toronto JavaScript TorontoCAMembers 7092Paul Dowman
ReactJS San Francisco Bay Area meetup San FranciscoUSDevelopers 6807devon lindsey
Founders and Coders LondonGBcollaborators 6792Dan Sofer
Build with Code - New York City New YorkUSEngineers 6691Jenny Mith
JavaScript Israel Tel Aviv-YafoILJavaScripters 6605Shai Reznik
NY JavaScript New YorkUSJavaScripters 6422Jovena Whatmoor
Ironhack Madrid MadridESIronhackers 6286Pablo Onieva
NYC Nodejs New YorkUSNodesters 6016Peter Bell
Hack Reactor: Learn to Code San FranciscoUSEngineers 5948Tyler Lambe
Women Who Code Silicon Valley SunnyvaleUSCoders 5432Women Who Code
Paris.js ParisFRJavaScripteurs 5156Pierrick Paul
JavaScript Meetup BangaloreINJS Hackers 5121Ganesh Samarthyam
Node.js Paris ParisFRNodeurs 4990Etienne Folio
GDG Lagos LagosNGMembers 4912Femi TAIWO
San Diego JavaScript Community San DiegoUSJavaScripters 4644Todd Bashor
SingaporeJS SingaporeSGdevelopers 4570Tim Oxley
Coderplex Community HyderabadINCoders 4458Kapil Dutta
Devhub Toronto TorontoCADevelopers 4446Emma Cuddy
JavaScript São Paulo São PauloBRJavascript developers 4412Erick Wendel
WarsawJS WarsawPLMembers 4366Piotr Zientara
MedellínJS MedellínCOJavaScripters 4317Julián Duque
Real World React San FranciscoUSDevelopers 4274Benjamin Dunphy
js-montreal - montreal's javascript user group MontréalCAJavascripters 4129Bruno Carriere
Node.js Club SF San FranciscoUSMembers 4069Matt Pardee
SFNode San FranciscoUSNode Users 4003Dan Shaw
Node Sydney SydneyAUnoders 3992James Richardson
Modern Web Mountain ViewUSMembers 3949Tracy
Eventloop México CityMXDesarrolladores 3822Jeduan Cornejo
sthlm.js StockholmSEJavaScripters 3769Jonny Strömberg
Women Who Code Berlin BerlinDEMembers 3764Women Who Code
AngularSP São PauloBRsuperheroes 3705William Grasel
Javascript Hyderabad HyderabadINjS'ers 3699Harish
Node.js Madrid MadridESasíncronos 3606Alex Fernández
Angular Paris ParisFRAngularians 3572Patrick Aljord
JavaScript MN MinneapolisUSJavaScripters 3520Randall Meeker
Meetup.js Buenos AiresARJavascripters 3449Juan Pablo Saraceno
Code Oregon PortlandUSStudents 3413Jenny W
Jakarta Javascript User Group JakartaIDJavaScript Ninja 3365Hengki Sihombing
React en Buenos Aires Buenos AiresARreactors 3346sebasjm
JSLovers DelhiINJSLovers 3320Neha Sharma
Chicago Node.js ChicagoUSMembers 3315Mike Hostetler
js.la - The Los Angeles JavaScript meetup Santa MonicaUSJavaScriptianados 3291David Guttman
BarcelonaJS BarcelonaESJavaScripters 3282Giorgio Polvara
KrakowJS KrakówPLJS pros 3263Krzysztof Kula
React Chicago ChicagoUSMembers 3254Bill Gloff
UtahJS Salt Lake CityUSJavaScriptafarians 3251Kip Lawrence
Seattle React.js SeattleUSMembers 3250Justin Soliz
NodeBR - São Paulo São PauloBRnoders 3184Erick Wendel
East Bay JavaScript Meetup Group OaklandUSJS Hackers 3156Dan McAulay
Manila JavaScript ManilaPHJS Developers 3155Thomas Laughlin
Seattle Node.js SeattleUSNode-jsers 3136Ryan Roemer
AngularMadrid MadridESAngulares 3107Juanfran
Node.js Denver/Boulder/Ft. Collins DenverUSMembers 3098Brooks Patton
Women Who Code Portland PortlandUSCoders 3083Women Who Code
DhakaJS DhakaBDMembers 3074Md. Azharul Islam
Node.js Israel Tel Aviv-YafoILNoders 3028Lior Kesos
Node.js Dilli DelhiINHackers 3024Anup Bishnoi
Coders in Rio Rio de JaneiroBRCoders 3012Rafael Cruz
JSLovers-Bengaluru BangaloreINJSLovers 3006Neha
Jakarta Learns Programming JakartaIDLearners 2923Sigit Prayoga
IBM Code London LondonGBCoders 2914Mo Haghighi
Frontend Developer Meetup Amsterdam AmsterdamNLFrontend Developers 2899Frontend Love
JavaScriptLA Meetup Los AngelesUSJavaScript Ninjas 2899VJ
Geek97 DelhiINGeeks 2882Dhananjay Kumar
HTML5 + JS Ciudad de México México CityMXMXL5 2868Alejandro
Portland ReactJS PortlandUSreactivists 2854Jason Brown
AngularBeers BarcelonaESMembers 2836David Pich
SoCal Node.js Los AngelesUSNoders 2810David Aktary
node.dc WashingtonUSNode programmers 2804Andrew Dunkman
Hack Reactor NYC New YorkUSFuture coders 2788Tyler Lambe
Node.js Meetup Berlin BerlinDEJavaScripters 2785Andreas Lubbe
JavaScript KC Kansas CityUSDevelopers 2773Josh Durham
London Node.js User Group LondonGBMembers 2765Adam Davis
NodersJS SantiagoCLJavascript@s 2759Ender Bonnet
Web Developers Community Ra'ananaILMembers 2724Ori Calvo
AmsterdamJS AmsterdamNLJavaScripters 2713Robert Haritonov
Women Who Code Dallas/Ft. Worth DallasUSCoders 2709Women Who Code
Austin Node.js AustinUSnoders 2704Mike McNeil
FranceJS ParisFRjavascripters 2691Julien Bouquillon [revolunet]
Atlanta Nodejs Developers AtlantaUSNode.lers 2681Ryan Connelly
The Digital Pond LondonGBDigital Ponderers 2669Siji Onabanjo
Serverless San FranciscoUSMembers 2646Serverless User Group
NashJS NashvilleUSmembers 2631Will
vienna.js Vienna JavaScript User Group ViennaATJavaScripters 2605Roland Schütz
Phoenix JavaScript PhoenixUSJavaScript Enthusiasts 2601Sal Aiello
Triangle JavaScript DurhamUSMembers 2599Kyle Buchanan
IT Development Café AmsterdamNLDevelopment Heroes 2596Luca Prak
AngularTO TorontoCAMembers 2587Nick Van Weerdenburg
Polyglot Languages & Runtimes (Java, JVM, nodejs, Swift...) BangaloreINMembers 2585Rajeev Palanki
Jstanbul: Istanbul JavaScript User Group IstanbulTRNinjas 2541Fatih Kadir Akın
ng-sydney, Angular And Way More... SydneyAUAngular Developers 2507Meligy
Free Code Camp Portland PortlandUSCampers 2493Brigette Eckert
life michael tel aviv Tel Aviv-YafoILMembers 2485Haim Michael
Javascript Ankara AnkaraTRJavaScript Tutkunları 2461Ustun Ozgur
Ironhack Paris ParisFRIronhackers 2455Eva Peris
Boston Node BostonUSMembers 2443Brian Sodano
South Bay JavaScript Meetup Mountain ViewUSjavascraps 2418Jackie Ho
GreeceJS AthensGRJavaScript devs 2384Elias Niaos
LyonJS LyonFRJS lovers 2364Paul Mougel
freeCodeCamp - Houston HoustonUSCampers 2363Jason Ephraim
Client Side Technologies BangaloreINTechies 2356Gautham Pai
Serverless London LondonGBMembers 2351Serverless User Group
DigitalCrafts | Learn to Code in Atlanta AtlantaUSBuilders 2348Max M.
Hyderabad Javascript Group HyderabadIN_javascripters 2341Ran.ga.na.than
Ottawa JavaScript OttawaCAMembers 2324Owain
SeattleJS Hackers SeattleUSHackers 2309Sam Eubank
Skyway Software Symposium MinneapolisUStech folk 2307Kevin Behrens
Node Melbourne MelbourneAUNodes 2303Andrey Sidorov
BayNode - The Bay Area Node.js Meetup Mountain ViewUSCallbacks 2298Maureen
The JS Roundabout LondonGBJS Enthusiasts 2297Phill Bateman
Guadalajara JS GuadalajaraMXJavascripters 2257Orlando Del Aguila Febres
Modern Web UI Palo AltoUSMembers 2253Tracy
London Javascript LondonGBDevs 2225christoffer noring
Mentorship Saturdays PortlandUSMembers 2209Brad
Uncoded | Long Beach Tech Meetups & Events Long BeachUSMembers 2198Mike Stewart
Lima NodeJS Meetup LimaPENodistas 2194Rein Petersen
Learn to Code New York New YorkUSCoders 2193Galvanize
DenverScript DenverUSScriptonites 2191Matt Webb
MakerSpace Charlotte CharlotteUSMakers 2188Benjamin Gatti
EgyptJS CairoEGMembers 2176Mohamed Shaban
React Amsterdam AmsterdamNLMembers 2167Robert Haritonov
Vuejs Paris ParisFRVuers 2149Eduardo
Learn To Code Phoenix PhoenixUSMembers 2148Galvanize
Front End Orlando CodePen OrlandoUSFront End Orlando CodePenners 2148David K
Dublin Node.js Meetup DublinIENoders 2142Sean Walsh
Dublin - Coder Forge DublinIECoders 2131Enda
Modern Web (Triangle) RaleighUSMembers 2129Tracy
Cambridge Developer Entrepreneur Networking Full Stack CambridgeUSMembers 2127Aaron K
PDXnode PortlandUSNodesters 2115Ben Michel
CopenhagenJS CopenhagenDKpeople 2098Kevin Simper
NodeUA KyivUAsoftware engineers 2083Timur Shemsedinov
BudapestJS BudapestHUJavaScript Ninjas 2077Norbert Sram
JavaScript Lab Paris ParisFRJS Hackers 2071Community Hackages
T.O.J. - Tales Of JavaScript San FranciscoUSMembers 2065Ann Burkett
The JavaScript Austin Meetup Group AustinUSJavaScripters 2044Johnathan Hebert
React Vancouver Meetup VancouverCAMembers 2037Eric Kim
Fullstack Developers New YorkUS{{developers}} 2013Alexander David
Azure Dublin Meetup DublinIEAzurees 2012Bryan Conneely
Women Who Code Bangalore BangaloreINCoders 1997Women Who Code
Colombo JS Meetup ColomboLKdevelopers 1982Pasindu De Silva
Node.JS Boston BostonUSMembers 1953James Yanyuk
JS Belgrade Meetup BelgradeRSMembers 1946Slobodan Stojanovic
Docker - Kubernetes - Openshift Hyderabad HyderabadINMembers 1940Chakradhar Rao Jonagam
Angular X Paris ParisFRnew generation Angularians 1938Bertrand Piselli
Angular Nigeria (ng)² LagosNGMembers 1938Kelechi Oti
Portland JavaScript Admirers PortlandUSAdmirers 1926Benjamin Herson
Codeworks - Barcelona BarcelonaESCoders 1918Alessandro Zanardi
DC Hack and Tell WashingtonUSHackers 1900Travis Hoppe
London HalfStack LondonGBSoftware Engineers 1899Dylan Schiemann
opensanca São CarlosBRMembros 1897Lucas Marques
Azure Israel Tel Aviv-YafoILMembers 1883Israeli Azure
ReactJS and Friends PuneINMembers 1878Vipul A M
I Teach You Programming, So You Teach Me English! TokyoJPMembers 1851Hiroaki Yasutomo
MilwaukeeJS MilwaukeeUSJavaScripters 1843Roman Reynebeau
Uszanowanko Programowanko GliwicePLDoges 1831Marcin Mazurek
Boulder JS BoulderUSMembers 1829Estella Gonzalez Madison
BandungJS BandungIDMembers 1822Zufrizal Yordan
Ahmedabad AngularJS AhmedabadINMembers 1815Dipesh Patel
Code's Cool Dallas AddisonUScodescoolers 1809Steven Gangstead
Bristol JS BristolGBMembers 1804Andrew McGregor
GolangNYC New YorkUSGophers 1784Gray Herter
Philadelphia JavaScript Developers PhiladelphiaUSJS Developers 1783Beth Dickerson
BucharestJS BucharestROJS Hackers 1782Ciprian Borodescu
Node.js Jakarta JakartaIDnodejs farmers 1773Lukluk Luhuring Santoso
All Things Web Tech ChicagoUSTech Leaders 1764brian rodriguez
Node.js and IBM Cloud Meetup BangaloreINMembers 1763Param Rao
Austin Coders & Hackers by The Tech^map AustinUSCoders & Hackers 1763Johan Borge
Bay Area JavaScript Interview Prep Meetup SunnyvaleUSProblem Solver 1757Jack Wong
Node.js Philly PhiladelphiaUSNodes 1749Leomar Durán
BA Node.js Meetup Buenos AiresARNoders 1741Node Buenos Aires
HH.js HamburgDEJavaScripters 1736Martin Kleppe
Beer.js Buenos Aires Buenos AiresARJavaScripters 1731Nicolás Gabriel Bevacqua
FullStack Cluj Cluj-NapocaROMembers 1730Paul Chirila
Angular Belgium BrusselsBEAngularian 1729Yassine Gayl
Meteor Egypt CairoEGMeteorites 1725Meteor Community Meetups
New York JavaScript Study Group New YorkUSJavascript Users 1722Robert LaMarca
Milano Frontend MilanoITFrontenders 1713Alessandro Muraro
Hong Kong JavaScript and Node.js Hong KongHKDevelopers 1710Kevin Bluer
Utah Node.js - Salt Lake City Salt Lake CityUSNode Ninjas 1710Aaron Seth Madsen
require('lx') - The JavaScript meetup in Lisbon LisbonPTJavaScripter 1705João Pinto Jerónimo
React - Rio de Janeiro Rio de JaneiroBRMembros 1694guilherme de azevedo martins
MunichJS – JavaScript User Group MünchenDEMembers 1686Béla Varga
Tech nights in Medellín MedellínCOMembers 1664Sebastian Miranda
Serverless Turkey IstanbulTRMembers 1643Serverless User Group
charmCityJs BaltimoreUSJavaScripters 1633Karl Groves
Freelance Talks : Les Apéros Freelances & Tips ParisFRFreelances 1631FreelanceRepublik
Dev.IL Tel Aviv-YafoILMembers 1627Tom Teman
London Digital Design and Technology User Group LondonGBD&D's 1623Mark Young
Austin Software Engineers & App Developers AustinUSSoftware Engineers/Developers 1620Chris Requena
Chennai JavaScript Meetup ChennaiINMembers 1607Abhishek Yadav
JSHeroes Meetups Cluj-NapocaROheroes 1597Paul BRIE
React Medellín MedellínCOMiembros 1584Alejandro Nanez
Mumbai JavaScript Meetup MumbaiINJavascriptors 1576Bilal Budhani
React Delhi NCR DelhiINMembers 1567Anoop Gupta