Company lists · Data refreshed September 2026

Top 25 Business consultancies worldwide

Name: Business consultancies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 23, 2026 147,812 companies tracked

RevenueBase identified 147,812 business consultancies worldwide as of September 2026 and tracks 1,284,902 professional contacts across them, including 415,621 with verified work emails and 146,122 with mobile numbers. The United States is the largest market and London the largest hub.

This list covers business consultancies 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 23, 2026. Country and city lists for business consultancies 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 23, 2026 86% judged on-target in blind review

147,812Companies

1,284,902Contacts tracked

415,621Verified emails

146,122Mobile numbers

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The 25 largest business consultancies worldwide

Ranked by team size

Top 25 of 147,812 business consultancies worldwide, ranked by team size, largest first. Data refreshed Sep 23, 2026. RevenueBase Smart Search rates how each company's information relates to business consultancies: 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	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	10001+	40,100 contacts →
	Indirect evidence “Choosing a digital partner is about more than capabilities, it’s about collaboration and character.” Source: RevenueBase Database · checked Sep 23, 2026
2	Boston Consulting Group BCG	Indirect evidence	Boston, MA, United StatesHQ checked Sep 23, 2026	10001+	38,730 contacts →
	Indirect evidence “Boston Consulting Group partners with leaders in business and society to tackle their most important challenges and capture their greatest opportunities.” Source: RevenueBase Database · checked Sep 23, 2026
3	Bain & Company	Indirect evidence	Boston, MA, United StatesHQ checked Sep 23, 2026	10001+	21,689 contacts →
	Indirect evidence “Bain & Company is a global consultancy that helps the world’s most ambitious change makers define the future.” Source: RevenueBase Database · checked Sep 23, 2026
4	Ey-Parthenon	Indirect evidence	London, United KingdomHQ checked Sep 23, 2026	10001+	17,070 contacts →
	Indirect evidence “Our unique combination of transformative strategy, transactions and corporate finance delivers real-world value – solutions that work in practice, not just on paper.” Source: RevenueBase Database · checked Sep 23, 2026
5	ZS	Indirect evidence	Evanston, IL, United StatesHQ checked Sep 23, 2026	10001+	16,896 contacts →
	Indirect evidence “ZS is a management consulting and technology firm that partners with companies to improve life and how we live it.” Source: RevenueBase Database · checked Sep 23, 2026
6	Capgemini Invent	Indirect evidence	Paris, FranceHQ checked Sep 23, 2026	10001+	16,032 contacts →
	Indirect evidence “Capgemini Invent is the digital innovation, consulting and transformation brand of the Capgemini Group, a global business line that combines market leading expertise in strategy…” Source: RevenueBase Database · checked Sep 23, 2026
7	Korn Ferry	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 23, 2026	10001+	13,486 contacts →
	Indirect evidence “Korn Ferry is a global consulting firm that powers performance.” Source: RevenueBase Database · checked Sep 23, 2026
8	Alvarez & Marsal	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	10001+	13,099 contacts →
	Indirect evidence “Alvarez & Marsal is a leading global professional services firm dedicated to helping organizations tackle their most complex business issues, maximize stakeholder value, and…” Source: RevenueBase Database · checked Sep 23, 2026
9	Slalom	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 23, 2026	10001+	10,032 contacts →
	Indirect evidence “Slalom is a fiercely human business and technology consulting company that leads with outcomes to bring more value, in all ways, always.” Source: RevenueBase Database · checked Sep 23, 2026
10	Protiviti	Indirect evidence	Menlo Park, CA, United StatesHQ checked Sep 23, 2026	5,001-10,000	8,779 contacts →
	Indirect evidence “Protiviti is a global consulting firm that delivers deep expertise, objective insights, a tailored approach and unparalleled collaboration to help leaders confidently face the…” Source: RevenueBase Database · checked Sep 23, 2026
11	Oliver Wyman	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	5,001-10,000	8,230 contacts →
	Indirect evidence “At Oliver Wyman, a Marsh business, we bring deep industry insight, bold innovation, and a collaborative approach that cuts through complexity to help organizations navigate their…” Source: RevenueBase Database · checked Sep 23, 2026
12	Bearingpoint	Indirect evidence	Amsterdam, NetherlandsHQ checked Sep 23, 2026	5,001-10,000	8,106 contacts →
	Indirect evidence “BearingPoint is an independent management and technology consultancy.” Source: RevenueBase Database · checked Sep 23, 2026
13	Yash Technologies	Indirect evidence	East Moline, IL, United StatesHQ checked Sep 23, 2026	5,001-10,000	7,769 contacts →
	Indirect evidence “YASH Technologies is a consulting-led transformation partner with a proven track record of helping customers address their current and prospective digital transformation…” Source: RevenueBase Database · checked Sep 23, 2026
14	HURON	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 23, 2026	5,001-10,000	7,520 contacts →
	Indirect evidence “Huron is a global professional services firm that collaborates with organizations to solve complex challenges and achieve ambitious goals.” Source: RevenueBase Database · checked Sep 23, 2026
15	Kearney	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 23, 2026	5,001-10,000	6,978 contacts →
	Indirect evidence “As one of the original firms, we’ve never lost sight of the fact that consulting is a people business.” Source: RevenueBase Database · checked Sep 23, 2026
16	Wavestone	Indirect evidence	100-101 Terrasse Boieldieu, FranceHQ checked Sep 23, 2026	1,001-5,000	6,190 contacts →
	Indirect evidence “Wavestone is a leading consulting firm operating at the intersection of business and technology.” Source: RevenueBase Database · checked Sep 23, 2026
17	Accenture Strategy & Consulting	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 23, 2026	5,001-10,000	5,514 contacts →
	Indirect evidence “Accenture Strategy combines deep industry expertise, advanced analytics capabilities and human-led design methodologies that enable clients to act with speed and confidence.” Source: RevenueBase Database · checked Sep 23, 2026
18	Strategy	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	1,001-5,000	5,082 contacts →
	Indirect evidence “From strategy to execution.” Source: RevenueBase Database · checked Sep 23, 2026
19	Amaris Consulting	Indirect evidence	Chêne-bourg, SwitzerlandHQ checked Sep 23, 2026	5,001-10,000	4,824 contacts →
	Indirect evidence “Amaris Consulting is an independent technology consulting firm providing guidance and solutions to businesses.” Source: RevenueBase Database · checked Sep 23, 2026
20	Roland Berger	Indirect evidence	Munich, GermanyHQ checked Sep 23, 2026	1,001-5,000	4,632 contacts →
	Indirect evidence “Roland Berger is the only leading global strategy consultancy of European origin.” Source: RevenueBase Database · checked Sep 23, 2026
21	Management Solutions	Indirect evidence	Madrid, SpainHQ checked Sep 23, 2026	1,001-5,000	4,468 contacts →
	Indirect evidence “Management Solutions is a leading provider of business consulting services for regulated industries.” Source: RevenueBase Database · checked Sep 23, 2026
22	Eisneramper	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	1,001-5,000	4,199 contacts →
	Indirect evidence “EisnerAmper, one of the largest business consulting firms in the world, is comprised of EisnerAmper LLP, a licensed independent CPA firm that provides client attest services; and…” Source: RevenueBase Database · checked Sep 23, 2026
23	L.E.K. Consulting	Indirect evidence	Boston, MA, United StatesHQ checked Sep 23, 2026	1,001-5,000	4,093 contacts →
	Indirect evidence “L.E.K.” Source: RevenueBase Database · checked Sep 23, 2026
24	SX Negócios	Indirect evidence	Novo Hamburgo, BrazilHQ checked Sep 23, 2026	5,001-10,000	4,020 contacts →
	Indirect evidence “Somos a Pulse Client Experts, uma empresa em constante evolução, impulsionados pela vontade de fazer acontecer.” Source: RevenueBase Database · checked Sep 23, 2026
25	Accenture Dach	Indirect evidence	Kronberg Im Taunus, GermanyHQ checked Sep 23, 2026	10001+	3,644 contacts →
	Indirect evidence “Über Accenture: Wir sind die weltweit führenden Berater für Strategie, Management, Digitalisierung, Technologie, Outsourcing und Business Transformation.” Source: RevenueBase Database · checked Sep 23, 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: business consultancies. 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 business consultancies.
Partial evidence: Its own public description names part of business consultancies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name business consultancies. 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 147,812 business consultancies worldwide

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Business consultancies worldwide at a glance

As of Sep 23, 2026

32.3%Verified-email coverage

11.4%Mobile-number coverage

8.7Average contacts per company

1-10Median size (employees)

3.9%Largest-city concentration · London

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

119,449

11-50

27,361

51-200

5,245

201-500

1,028

501-1,000

380

1,001-5,000

275

5,001-10,000

10001+

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 business consultancies, 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: 46 countries, largest first: the United States, Brazil, the United Kingdom, France, Germany, Italy, Spain, the Netherlands, Australia, Canada and 36 more. Country and city lists for business consultancies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “business consultancies”. 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 business consultancies), 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 business consultancies, 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, 415,621 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 23, 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.

Business consultancies by location

562 lists · largest first

Every Business consultancies 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 business consultancies, 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 business consultancies are there worldwide?

RevenueBase identified 147,812 business consultancies 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, headquartered in New York, tops this list with the largest team on record.

Which country has the most business consultancies?

The United States leads with 29,783 companies, followed by Brazil (15,907) and the United Kingdom (15,837). Every business consultancies list by country and city is linked on this page.

Which city has the most business consultancies?

London leads with 5791 headquartered companies, followed by Sao Paulo (4173) and Paris (3161).

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 415,621 verified decision-maker contacts tracked across these 147,812 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 23, 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.