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 13207Dave Nugent
Women Who Code NYC New YorkUSBadass Female Coders 12441Women Who Code
London JavaScript Community LondonGBJSLovers 8004luca mezzalira
Pune Developer's Community PuneINPDC 7804Suyog
ExpertTalks Pune PuneINTech Enthusiasts 7365Ashish
Uber Engineering Events - San Francisco San FranciscoUSEngineering Enthusiasts 7363Uber Engineering
Toronto JavaScript TorontoCAMembers 7011Paul Dowman
ReactJS San Francisco Bay Area meetup San FranciscoUSDevelopers 6790devon lindsey
Founders & Coders LondonGBcollaborators 6730Dan Sofer
JavaScript Israel Tel Aviv-YafoILJavaScripters 6545Shai Reznik
Build with Code - New York City New YorkUSEngineers 6414Jenny Mith
NY JavaScript New YorkUSJavaScripters 6333Jovena Whatmoor
Ironhack Madrid MadridESIronhackers 6185Pablo Onieva
NYC Nodejs New YorkUSNodesters 5968Peter Bell
Hack Reactor: Learn to Code San FranciscoUSEngineers 5942Tyler Lambe
Women Who Code Silicon Valley SunnyvaleUSCoders 5386Women Who Code
Paris.js ParisFRJavaScripteurs 5107Pierrick Paul
JavaScript Meetup BangaloreINJS Hackers 5056Ganesh Samarthyam
Node.js Paris ParisFRNodeurs 4962Etienne Folio
GDG Lagos LagosNGMembers 4807Femi TAIWO
San Diego JavaScript Community San DiegoUSJavaScripters 4582Todd Bashor
SingaporeJS SingaporeSGdevelopers 4540Tim Oxley
Coderplex Community HyderabadINCoders 4386Kapil Dutta
JavaScript São Paulo São PauloBRJavascript developers 4379Erick Wendel
Devhub Toronto TorontoCADevelopers 4360Emma Cuddy
WarsawJS WarsawPLMembers 4286Piotr Zientara
MedellínJS MedellínCOJavaScripters 4282Julián Duque
Real World React San FranciscoUSDevelopers 4143Benjamin Dunphy
Node.js Club SF San FranciscoUSMembers 4073Matt Pardee
js-montreal - montreal's javascript user group MontréalCAJavascripters 4070Bruno Carriere
Node Sydney SydneyAUnoders 3952James Richardson
SFNode San FranciscoUSNode Users 3923Dan Shaw
Modern Web Mountain ViewUSMembers 3859Tracy
Eventloop México CityMXDesarrolladores 3813Jeduan Cornejo
sthlm.js StockholmSEJavaScripters 3734Jonny Strömberg
Women Who Code Berlin BerlinDEMembers 3714Women Who Code
Javascript Hyderabad HyderabadINjS'ers 3698Harish
AngularSP São PauloBRsuperheroes 3684William Grasel
Node.js Madrid MadridESasíncronos 3586Alex Fernández
Angular Paris ParisFRAngularians 3578Patrick Aljord
JavaScript MN MinneapolisUSJavaScripters 3483Randall Meeker
Meetup.js Buenos AiresARJavascripters 3427Juan Pablo Saraceno
Code Oregon PortlandUSStudents 3410Jenny W
Jakarta Javascript User Group JakartaIDJavaScript Ninja 3307Hengki Sihombing
React en Buenos Aires Buenos AiresARreactors 3304sebasjm
Chicago Node.js ChicagoUSMembers 3294Mike Hostetler
js.la - The Los Angeles JavaScript meetup Santa MonicaUSJavaScriptianados 3270David Guttman
BarcelonaJS BarcelonaESJavaScripters 3258Giorgio Polvara
JSLovers DelhiINJSLovers 3252Neha Sharma
KrakowJS KrakówPLJS pros 3227Krzysztof Kula
UtahJS Salt Lake CityUSJavaScriptafarians 3213Kip Lawrence
React Chicago ChicagoUSMembers 3201Bill Gloff
Seattle React.js SeattleUSMembers 3175Justin Soliz
NodeBR - São Paulo São PauloBRnoders 3164Erick Wendel
East Bay JavaScript Meetup Group OaklandUSJS Hackers 3152Dan McAulay
Seattle Node.js SeattleUSNode-jsers 3133Ryan Roemer
AngularMadrid MadridESAngulares 3109Juanfran
Manila JavaScript ManilaPHJS Developers 3105Thomas Laughlin
Node.js Denver/Boulder/Ft. Collins DenverUSMembers 3071Brooks Patton
DhakaJS DhakaBDMembers 3048Md. Azharul Islam
Women Who Code Portland PortlandUSCoders 3036Women Who Code
Node.js Dilli DelhiINHackers 3018Anup Bishnoi
Coders in Rio Rio de JaneiroBRCoders 2949Rafael Cruz
JSLovers-Bengaluru BangaloreINJSLovers 2926Neha
Jakarta Learns Programming JakartaIDLearners 2917Sigit Prayoga
JavaScriptLA Meetup Los AngelesUSJavaScript Ninjas 2887VJ
Node.js Israel Tel Aviv-YafoILNoders 2876Lior Kesos
Frontend Developer Meetup Amsterdam AmsterdamNLFrontend Developers 2860Frontend Love
Geek97 DelhiINGeeks 2860Dhananjay Kumar
HTML5 + JS Ciudad de México México CityMXMXL5 2855Alejandro
AngularBeers BarcelonaESMembers 2831David Pich
node.dc WashingtonUSNode programmers 2808Andrew Dunkman
SoCal Node.js Los AngelesUSNoders 2802David Aktary
Portland ReactJS PortlandUSreactivists 2791Jason Brown
Hack Reactor NYC New YorkUSFuture coders 2789Tyler Lambe
Node.js Meetup Berlin BerlinDEJavaScripters 2782Andreas Lubbe
JavaScript KC Kansas CityUSDevelopers 2759Josh Durham
NodersJS SantiagoCLJavascript@s 2724Ender Bonnet
Web Developers Community Ra'ananaILMembers 2721Ori Calvo
London Node.js User Group LondonGBMembers 2709Adam Davis
AmsterdamJS AmsterdamNLJavaScripters 2697Robert Haritonov
The Digital Pond LondonGBDigital Ponderers 2675Siji Onabanjo
FranceJS ParisFRjavascripters 2675Julien Bouquillon [revolunet]
Atlanta Nodejs Developers AtlantaUSNode.lers 2666Ryan Connelly
Austin Node.js AustinUSnoders 2640Mike McNeil
Serverless San FranciscoUSMembers 2639Serverless User Group
Women Who Code Dallas/Ft. Worth DallasUSCoders 2609Women Who Code
AngularTO TorontoCAMembers 2594Nick Van Weerdenburg
NashJS NashvilleUSmembers 2586Will
vienna.js Vienna JavaScript User Group ViennaATJavaScripters 2579Roland Schütz
Triangle JavaScript DurhamUSMembers 2576Kyle Buchanan
Phoenix JavaScript PhoenixUSJavaScript Enthusiasts 2559Sal Aiello
Polyglot Languages & Runtimes (Java, JVM, nodejs, Swift...) BangaloreINMembers 2558Rajeev Palanki
IBM Code London LondonGBCoders 2553Mo Haghighi
IT Development Café AmsterdamNLDevelopment Heroes 2545Luca Prak
ng-sydney, Angular And Way More... SydneyAUAngular Developers 2503Meligy
life michael tel aviv Tel Aviv-YafoILMembers 2463Haim Michael
Boston Node BostonUSMembers 2448Brian Sodano
Javascript Ankara AnkaraTRJavaScript Tutkunları 2436Ustun Ozgur
Free Code Camp Portland PortlandUSCampers 2425Brigette Eckert
South Bay JavaScript Meetup Mountain ViewUSjavascraps 2410Jackie Ho
Jstanbul: Istanbul JavaScript User Group IstanbulTRNinjas 2400Fatih Kadir Akın
Client Side Technologies BangaloreINTechies 2361Gautham Pai
DigitalCrafts | Learn to Code in Atlanta AtlantaUSBuilders 2339Max M.
GreeceJS AthensGRJavaScript devs 2332Elias Niaos
Serverless London LondonGBMembers 2331Serverless User Group
LyonJS LyonFRJS lovers 2326Paul Mougel
freeCodeCamp - Houston HoustonUSCampers 2316Jason Ephraim
BayNode - The Bay Area Node.js Meetup Mountain ViewUSCallbacks 2305Maureen
Node Melbourne MelbourneAUNodes 2300Andrey Sidorov
Hyderabad Javascript Group HyderabadIN_javascripters 2298Ran.ga.na.than
Ironhack Paris ParisFRIronhackers 2289Charlotte Bottemanne
Ottawa JavaScript OttawaCAMembers 2286Owain
SeattleJS Hackers SeattleUSHackers 2279Sam Eubank
Skyway Software Symposium MinneapolisUStech folk 2273Kevin Behrens
FREE Blockchain App Development Workshop LondonGBMembers 2269Kayo
Modern Web UI Palo AltoUSMembers 2259Tracy
The JS Roundabout LondonGBJS Enthusiasts 2239Phill Bateman
Guadalajara JS GuadalajaraMXJavascripters 2231Orlando Del Aguila Febres
London Javascript LondonGBDevs 2211christoffer noring
Uncoded | Long Beach Tech Meetups & Events Long BeachUSMembers 2187Mike Stewart
Lima NodeJS Meetup LimaPENodistas 2182Rein Petersen
DenverScript DenverUSScriptonites 2178Matt Webb
Learn to Code New York New YorkUSCoders 2174Galvanize
Mentorship Saturdays PortlandUSMembers 2161Brad
MakerSpace Charlotte CharlotteUSMakers 2144Benjamin Gatti
Front End Orlando CodePen OrlandoUSFront End Orlando CodePenners 2137David K
Dublin Node.js Meetup DublinIENoders 2134Sean Walsh
EgyptJS CairoEGMembers 2122Mohamed Shaban
Cambridge Developer Entrepreneur Networking Full Stack CambridgeUSMembers 2106Aaron K
Vuejs Paris ParisFRVuers 2092Eduardo
Dublin - Coder Forge DublinIECoders 2086Enda
PDXnode PortlandUSNodesters 2080Ben Michel
Modern Web (Triangle) RaleighUSMembers 2078Tracy
React Amsterdam AmsterdamNLMembers 2069Robert Haritonov
T.O.J. - Tales Of JavaScript San FranciscoUSMembers 2068Ann Burkett
NodeUA KyivUAsoftware engineers 2067Timur Shemsedinov
CopenhagenJS CopenhagenDKpeople 2063Kevin Simper
JavaScript Lab Paris ParisFRJS Hackers 2061Community Hackages
Learn To Code Phoenix PhoenixUSMembers 2060Galvanize
BudapestJS BudapestHUJavaScript Ninjas 2048Gergely Németh
The JavaScript Austin Meetup Group AustinUSJavaScripters 2042Johnathan Hebert
React Vancouver Meetup VancouverCAMembers 2005Eric Kim
Fullstack Developers New YorkUS{{developers}} 2003Alexander David
Azure Dublin Meetup DublinIEAzurees 1987Bryan Conneely
Node.JS Boston BostonUSMembers 1962Freedom Dumlao
JS Belgrade Meetup BelgradeRSMembers 1932Slobodan Stojanovic
Women Who Code Bangalore BangaloreINCoders 1929Women Who Code
Colombo JS Meetup ColomboLKdevelopers 1927Pasindu De Silva
Angular X Paris ParisFRnew generation Angularians 1925Bertrand Piselli
Portland JavaScript Admirers PortlandUSAdmirers 1904Benjamin Herson
opensanca São CarlosBRMembros 1888Lucas Marques
DC Hack and Tell WashingtonUSHackers 1885Travis Hoppe
Angular Nigeria (ng)² LagosNGMembers 1874Kelechi Oti
Codeworks - Barcelona BarcelonaESCoders 1867Alessandro Zanardi
Azure Israel Tel Aviv-YafoILMembers 1862Israeli Azure
Docker - Kubernetes - Openshift Hyderabad HyderabadINMembers 1860Chakradhar Rao Jonagam
London HalfStack LondonGBSoftware Engineers 1854Dylan Schiemann
I Teach You Programming, So You Teach Me English! TokyoJPMembers 1825Hiroaki Yasutomo
Uszanowanko Programowanko GliwicePLDoges 1820Marcin Mazurek
MilwaukeeJS MilwaukeeUSJavaScripters 1819Roman Reynebeau
Ahmedabad AngularJS AhmedabadINMembers 1809Dipesh Patel
Boulder JS BoulderUSMembers 1807Estella Gonzalez Madison
BandungJS BandungIDMembers 1787Zufrizal Yordan
Bristol JS BristolGBMembers 1772Andrew McGregor
All Things Web Tech ChicagoUSTech Leaders 1768brian rodriguez
GolangNYC New YorkUSGophers 1765Gray Herter
BucharestJS BucharestROJS Hackers 1763Ciprian Borodescu
Code's Cool Dallas AddisonUScodescoolers 1762Steven Gangstead
Node.js and IBM Cloud Meetup BangaloreINMembers 1761Param Rao
Austin Coders & Hackers by The Tech^map AustinUSCoders & Hackers 1759Johan Borge
Node.js Jakarta JakartaIDnodejs farmers 1753Lukluk Luhuring Santoso
ReactJS and Friends PuneINMembers 1753Vipul A M
HH.js HamburgDEJavaScripters 1738Martin Kleppe
Node.js Philly PhiladelphiaUSNodes 1737Leomar Durán
BA Node.js Meetup Buenos AiresARNoders 1737Node Buenos Aires
Philadelphia JavaScript Developers PhiladelphiaUSJS Developers 1731Beth Dickerson
Beer.js Buenos Aires Buenos AiresARJavaScripters 1728Nicolás Gabriel Bevacqua
New York JavaScript Study Group New YorkUSJavascript Users 1723Robert LaMarca
FullStack Cluj Cluj-NapocaROMembers 1717Paul Chirila
Angular Belgium BrusselsBEAngularian 1707Yassine Gayl
Meteor Egypt CairoEGMeteorites 1705Meteor Community Meetups
Milano Frontend MilanoITFrontenders 1701Alessandro Muraro
Hong Kong JavaScript and Node.js Hong KongHKDevelopers 1698Kevin Bluer
Bay Area JavaScript Interview Prep Meetup SunnyvaleUSProblem Solver 1694Jack Wong
require('lx') - The JavaScript meetup in Lisbon LisbonPTJavaScripter 1684João Pinto Jerónimo
Utah Node.js - Salt Lake City Salt Lake CityUSNode Ninjas 1684Aaron Seth Madsen
MunichJS – JavaScript User Group MünchenDEMembers 1679Béla Varga
Tech nights in Medellín MedellínCOMembers 1663Sebastian Miranda
React - Rio de Janeiro Rio de JaneiroBRMembros 1649guilherme de azevedo martins
Freelance Talks : Les Apéros Freelances & Tips ParisFRFreelances 1630FreelanceRepublik
London Digital Design and Technology User Group LondonGBD&D's 1629Mark Young
charmCityJs BaltimoreUSJavaScripters 1619Karl Groves
Serverless Turkey IstanbulTRMembers 1612Serverless User Group
Dev.IL Tel Aviv-YafoILMembers 1604Tom Teman
Austin Software Engineers & App Developers AustinUSSoftware Engineers/Developers 1585Chris Requena
Chennai JavaScript Meetup ChennaiINMembers 1582Abhishek Yadav
SF Front-End Developers: Experience Engineering San FranciscoUSExperience Engineers 1565Ahmad Ansari
JSHeroes Meetups Cluj-NapocaROheroes 1564Paul BRIE
Mumbai JavaScript Meetup MumbaiINMembers 1559Bilal Budhani