Company lists · Data refreshed November 2026

Top 25 Member-based business organizations worldwide

RevenueBase identified 3,183 company matches for member-based business organizations worldwide as of November 2026 and tracks 43,139 professional contacts across them, including 5,502 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for member-based business organizations worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for member-based business organizations follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
3,183Companies
43,139Contacts tracked
5,502Verified emails
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The 25 largest member-based business organizations worldwide

Ranked by team size
Top 25 of 3,183 company matches for member-based business organizations worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchBrazilHQ recorded Nov 6, 202610001+16,604 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchWashington, IL, United StatesHQ recorded Nov 6, 2026201-5001,292 contacts →

Exact match

“At the National Restaurant Association, we strive to help every one of our members build customer loyalty, find financial success and provide rewarding careers in foodservice.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchWashington, DC, United StatesHQ recorded Nov 6, 2026501-1,000740 contacts →

Exact match

“The Chamber of Commerce of the United States is the world’s largest business organization.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchCopenhagen, DenmarkHQ recorded Nov 6, 2026201-500460 contacts →

Exact match

“Vi er erhvervsorganisation og arbejdsgiverforening for et af verdens mest handlekraftige erhvervsliv.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchBrussels, BelgiumHQ recorded Nov 6, 202610001+430 contacts →

Exact match

“Smart enables business professionals from a range of fields and backgrounds to pursue their work by providing them with a set of shared tools: from legal, financial and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchLinz, AustriaHQ recorded Nov 6, 2026201-500232 contacts →

Exact match

“Die WKO Oberösterreich vertritt die Interessen von über Mitgliedsbetriebe.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchMelbourne, AustraliaHQ recorded Nov 6, 2026201-500216 contacts →

Exact match

“The Victorian Chamber of Commerce and Industry is the largest and most influential not-for-profit business organisation in Victoria, informing and supporting our members, clients…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchTurin, ItalyHQ recorded Nov 6, 202651-200206 contacts →

Exact match

“L'Unione Industriali Torino è un'associazione volontaria d’imprese di livello territoriale aderente a Confindustria, per la rappresentanza, la tutela, la promozione e lo sviluppo…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchHermosillo, MexicoHQ recorded Nov 6, 2026201-500168 contacts →

Exact match

“Nuestro propósito es consolidar un grupo empresarial profesional e institucional que, apoyando a quienes lo integran, innovando con rumbo, explorando oportunidades y disfrutando…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchBloomington, MN, United StatesHQ recorded Nov 6, 202651-200145 contacts →

Exact match

“With a solution to every business problem, Nexstar is a member-owned organization that drives business growth and development through continued education and the sharing of ideas.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchMaringá, BrazilHQ recorded Nov 6, 202651-200137 contacts →

Exact match

“O maior poder que uma cidade pode ter é o talento para reunir diferentes ideias, habilidades profissionais e a diversidade empreendedora da comunidade em prol do progresso…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchPhiladelphia, PA, United StatesHQ recorded Nov 6, 202651-200136 contacts →

Exact match

“The Chamber of Commerce for Greater Philadelphia brings area businesses and civic leaders together to promote growth and create opportunity in our region.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchBirmingham, United KingdomHQ recorded Nov 6, 202651-200130 contacts →

Exact match

“https://linktr.ee/GBhamChambers As the voice of local business since 1813, we strive to help firms across the region connect, support and grow.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchHartford, CT, United StatesHQ recorded Nov 6, 202651-200124 contacts →

Exact match

“CBIA is the leading voice for business in the state, representing thousands of member companies, small and large, across a diverse range of industries.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchBrentwood, TN, IndiaHQ recorded Nov 6, 202651-200121 contacts →

Exact match

“Chief Executive Group improves the effectiveness of business leaders and inspires the free market system that fosters innovation, provides opportunity and ensures fairness for all.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchGuayaquil, EcuadorHQ recorded Nov 6, 202651-200115 contacts →

Exact match

“La Cámara de Comercio de Guayaquil es una persona jurídica de derecho privado sin fines de lucro, que funciona de conformidad con las disposiciones de la Ley de Cámaras de…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchManhattan Beach, AB, United StatesHQ recorded Nov 6, 202651-200110 contacts →

Exact match

“Quartz Network is a curated business community for ambitious people.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchMilwaukee, WI, United StatesHQ recorded Nov 6, 202611-5096 contacts →

Exact match

“Metropolitan Milwaukee Association of Commerce’s (MMAC) vision is to create a globally competitive region that fosters high-value employment to sustain a vibrant quality of life…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchUnited StatesHQ recorded Nov 6, 2026201-50096 contacts →

Exact match

“At SBGA, we understand the rewards and challenges of running a business.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchDurban, South AfricaHQ recorded Nov 6, 202611-5090 contacts →

Exact match

“ABOUT THE DURBAN CHAMBER OF COMMERCE AND INDUSTRY NPC The Durban Chamber of Commerce and Industry was established in 1856 and is one of the oldest and largest metropolitan…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchOklahoma City, OK, United StatesHQ recorded Nov 6, 202651-20089 contacts →

Exact match

“For more than a century, the Greater Oklahoma City Chamber has been the voice of business and the visionary organization in Oklahoma City.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchSyracuse, NY, United StatesHQ recorded Nov 6, 202651-20088 contacts →

Exact match

“CenterState CEO is an independent and forward thinking economic development strategist, a business leadership organization and chamber of commerce; dedicated to the success of its…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchSydney, AustraliaHQ recorded Nov 6, 202651-20088 contacts →

Exact match

“Empowering Enterprise Leaders Welcome to Factor, the exclusive membership organisation dedicated to empowering and enabling leaders in the enterprise space.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchBayonne, FranceHQ recorded Nov 6, 202651-20086 contacts →

Exact match

“Gérée par des entrepreneurs pour les entrepreneurs, la CCI Bayonne Pays Basque est en prise directe avec les besoins des entreprises.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchDuluth, GA, United StatesHQ recorded Nov 6, 202611-5078 contacts →

Exact match

“Our mission is to champion business.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 3,183 member-based business organizations worldwide

See the full list, filter by size, metro and specialty, and access 5,502 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Member-based business organizations worldwide at a glance

As of Nov 6, 2026
12.8%Verified-email coverage
13.6Average contacts per company
1-10Median size (employees)
0.7%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
2,044
11-50
735
51-200
241
201-500
93
501-1,000
28
1,001-5,000
16
5,001-10,000
2
10001+
15

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage
Every country. Country and city lists for member-based business organizations are linked below.
What qualifies
Company records worldwide whose business descriptions match “member-based business organizations” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 5,502 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Member-based business organizations by location

10 lists · largest first

Every Member-based business organizations list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “member-based business organizations”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many member-based business organizations are there worldwide?

RevenueBase identified 3,183 company matches for member-based business organizations worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Primeiro Emprego tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most member-based business organizations?

The United States leads with 1,303 companies, followed by France (237) and the United Kingdom (186). Every member-based business organizations list by country and city is linked on this page.

Which city has the most member-based business organizations?

London leads with 21 company records, followed by Chicago (18) and New York (16).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 5,502 professional contacts with verified work emails tracked across these 3,183 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.