Company lists · Data refreshed September 2026

Top 25 Membership organization consultants worldwide

Name: Membership organization consultants worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 27,388 companies tracked

RevenueBase identified 27,388 membership organization consultants worldwide as of September 2026 and tracks 179,760 professional contacts across them, including 35,996 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers membership organization consultants worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 20, 2026. Country and city lists for membership organization consultants follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 Smart Search rating on every row Refreshed Sep 20, 2026 86% judged on-target in blind review

27,388Companies

179,760Contacts tracked

35,996Verified emails

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The 25 largest membership organization consultants worldwide

Ranked by team size

Top 25 of 27,388 membership organization consultants worldwide, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to membership organization consultants: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	EXL Services LTD	Indirect evidence	n/a	n/a	1,373 contacts →
	Indirect evidence “Established in 1994, we provide a blend of business strategy, marketing services, behavioural change and executive coaching services and techniques to help grow the business of…” Source: RevenueBase Database · checked Sep 20, 2026
2	Intellera Consulting	Indirect evidence	Milan, ItalyHQ checked Sep 20, 2026	1,001-5,000	1,304 contacts →
	Indirect evidence “Intellera Consulting is a consulting company born from the buyout management of the PwC Public administration and Healthcare branch.” Source: RevenueBase Database · checked Sep 20, 2026
3	Blackmont Consulting	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	201-500	1,221 contacts →
	Indirect evidence “Blackmont Consulting provides 100% free advisory services to NGO´s, NPO´s and start-ups.” Source: RevenueBase Database · checked Sep 20, 2026
4	PKF - Australia	Indirect evidence	Melbourne, AustraliaHQ checked Sep 20, 2026	501-1,000	1,005 contacts →
	Indirect evidence “PKF is a global community where dynamic business and wealth advisors can belong, grow, and thrive.” Source: RevenueBase Database · checked Sep 20, 2026
5	Lucas Group	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 20, 2026	10001+	756 contacts →
	Indirect evidence “Ultimate Minds is a professional consulting and marketing firm dedicated to empowering businesses, nonprofits, and startups with smart, affordable, and results-driven solutions.” Source: RevenueBase Database · checked Sep 20, 2026
6	Smithbucklin	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	501-1,000	720 contacts →
	Indirect evidence “Associations help industries, fields and professions stay current and connected for the members and communities who depend on them.” Source: RevenueBase Database · checked Sep 20, 2026
7	Clark Schaefer Hackett	Indirect evidence	Dayton, OH, United StatesHQ checked Sep 20, 2026	501-1,000	683 contacts →
	Indirect evidence “Clark Schaefer Hackett is more than an accounting and advisory firm; we’re striving to be your most valued advisor.” Source: RevenueBase Database · checked Sep 20, 2026
8	CF	Indirect evidence	Bordeaux, FranceHQ checked Sep 20, 2026	1,001-5,000	674 contacts →
	Indirect evidence “Diriger une entreprise aujourd’hui, c’est faire face à des décisions de plus en plus complexes.” Source: RevenueBase Database · checked Sep 20, 2026
9	ERG	Indirect evidence	Concord, MA, United StatesHQ checked Sep 20, 2026	501-1,000	663 contacts →
	Indirect evidence “ERG is a multidisciplinary consulting firm offering a broad range of professional services.” Source: RevenueBase Database · checked Sep 20, 2026
10	Groupe Cogedis	Indirect evidence	Saint Thonan, FranceHQ checked Sep 20, 2026	501-1,000	654 contacts →
	Indirect evidence “Le Groupe Cogedis est un groupe multi-expertises avec plus de 25 compétences et sociétés partenaires au service des professionnels et des agriculteurs.” Source: RevenueBase Database · checked Sep 20, 2026
11	Vitanuova Previdenza & Protezione	Indirect evidence	Verona, ItalyHQ checked Sep 20, 2026	1,001-5,000	604 contacts →
	Indirect evidence “Vitanuova Previdenza & Protezione è un primario broker assicurativo fondato nel 2015 e diventato Società Per Azioni dal 2020.” Source: RevenueBase Database · checked Sep 20, 2026
12	GSA National	Indirect evidence	Fairfax, VA, United StatesHQ checked Sep 20, 2026	201-500	558 contacts →
	Indirect evidence “GSA National has been helping government contractors ensure compliance and streamline costs since 1991.” Source: RevenueBase Database · checked Sep 20, 2026
13	Executive Director, INC	Indirect evidence	Milwaukee, WI, United StatesHQ checked Sep 20, 2026	201-500	543 contacts →
	Indirect evidence “EDI is a top company in association management, providing professional services for national and international medical, certification, and scientific associations.” Source: RevenueBase Database · checked Sep 20, 2026
14	Norsys	Indirect evidence	Ennevelin, FranceHQ checked Sep 20, 2026	501-1,000	528 contacts →
	Indirect evidence “La vision du groupe norsys : développer une performance globale de l’entreprise.” Source: RevenueBase Database · checked Sep 20, 2026
15	Implid	Indirect evidence	Lyon, FranceHQ checked Sep 20, 2026	501-1,000	502 contacts →
	Indirect evidence “Depuis plus de 40 ans, nos équipes de spécialistes accompagnent nos clients de petites, moyennes et grandes entreprises, dans le pilotage de leurs organisations, la gestion des…” Source: RevenueBase Database · checked Sep 20, 2026
16	GVA	Indirect evidence	Paris, FranceHQ checked Sep 20, 2026	51-200	499 contacts →
	Indirect evidence “Créé en 1975, GVA est composé de 80 personnes, pour près de 10 millions de chiffre d’affaires.” Source: RevenueBase Database · checked Sep 20, 2026
17	DB	Indirect evidence	Qormi Qormi, MaltaHQ checked Sep 20, 2026	n/a	468 contacts →
	Indirect evidence “DB supports organisations build greater power, passion and performance by assisting them identify, set and implement the necessary dimension and bearing required to reach their…” Source: RevenueBase Database · checked Sep 20, 2026
18	Demarco	Indirect evidence	Belo Horizonte, BrazilHQ checked Sep 20, 2026	201-500	452 contacts →
	Indirect evidence “Since 2004, we have helped companies solve their challenges in People, Management, Security and Trade Union Relations, delivering world-class results.” Source: RevenueBase Database · checked Sep 20, 2026
19	PWC Channel Islands	Indirect evidence	JerseyHQ checked Sep 20, 2026	501-1,000	433 contacts →
	Indirect evidence “We are one firm – a powerhouse of commercial enterprise that does the right thing for our clients, our people and our communities.” Source: RevenueBase Database · checked Sep 20, 2026
20	LIMRA	Partial evidence	Windsor, CT, United StatesHQ checked Sep 20, 2026	201-500	410 contacts →
	Partial evidence “LIMRA is a worldwide research, consulting, and professional development organization that helps more than 600 insurance and financial services companies in 73 countries increase…” Source: RevenueBase Database · checked Sep 20, 2026
21	Deloitte Consulting	Indirect evidence	Milan, ItalyHQ checked Sep 20, 2026	10001+	406 contacts →
	Indirect evidence “Deloitte è tra le più grandi realtà nei servizi professionali alle imprese in Italia, dove è presente da circa 100 anni.” Source: RevenueBase Database · checked Sep 20, 2026
22	BIG 4 Consultancy Firm	Partial evidence	Liverpool, United KingdomHQ checked Sep 20, 2026	n/a	363 contacts →
	Partial evidence “This is a page for all contractors and consultants to join, where you are unable to disclose client relationship.” Source: RevenueBase Database · checked Sep 20, 2026
23	The Acquisition Group	Indirect evidence	Vancouver, BC, CanadaHQ checked Sep 20, 2026	201-500	355 contacts →
	Indirect evidence “At The Acquisition Group, we believe growth starts with opportunity.” Source: RevenueBase Database · checked Sep 20, 2026
24	Drummond Advisors	Indirect evidence	Boston, MA, United StatesHQ checked Sep 20, 2026	201-500	322 contacts →
	Indirect evidence “Drummond Advisors provides global consulting services to companies focusing on accounting, tax, legal and business development.” Source: RevenueBase Database · checked Sep 20, 2026
25	NCM Associates	Indirect evidence	Kansas City, MO, United StatesHQ checked Sep 20, 2026	201-500	321 contacts →
	Indirect evidence “The employee-owners of NCM® Associates help thousands of dealerships throughout North America enhance profitability through a unique combination of state-of-the-art business…” Source: RevenueBase Database · checked Sep 20, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: membership organization consultants. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names membership organization consultants.
Partial evidence: Its own public description names part of membership organization consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name membership organization consultants. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 27,388 membership organization consultants worldwide

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Membership organization consultants worldwide at a glance

As of Sep 20, 2026

20.0%Verified-email coverage

6.6Average contacts per company

1-10Median size (employees)

1.5%Largest-city concentration · Sao Paulo

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

20,006

11-50

5,743

51-200

1,149

201-500

261

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among membership organization consultants, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for membership organization consultants are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “membership organization consultants”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names membership organization consultants), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among membership organization consultants, and records with no verified work email.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 35,996 across the full list. 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 September 20, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Membership organization consultants by location

110 lists · largest first

Every Membership organization consultants list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names membership organization consultants, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many membership organization consultants are there worldwide?

RevenueBase identified 27,388 membership organization consultants worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

EXL Services LTD, headquartered in Worldwide, tops this list with the largest team on record.

Which country has the most membership organization consultants?

The United States leads with 7,693 companies, followed by Brazil (1,536) and France (1,214). Every membership organization consultants list by country and city is linked on this page.

Which city has the most membership organization consultants?

Sao Paulo leads with 415 headquartered companies, followed by London (401) and Paris (363).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 35,996 verified decision-maker contacts tracked across these 27,388 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 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 Smart Search, 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.