Company lists · Data refreshed August 2026

Top 25 Business consulting firms worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Aug 31, 2026 101,113 companies tracked

RevenueBase identified 101,113 business consulting firms worldwide as of August 2026 and tracks 919,725 professional contacts across them, including 311,993 with verified work emails and 143,136 with mobile numbers. The United States is the largest market and London the largest hub.

This list covers business consulting firms 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 August 31, 2026. Country and city lists for business consulting firms 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 Aug 31, 2026 86% judged on-target in blind review

101,113Companies

919,725Contacts tracked

311,993Verified emails

143,136Mobile numbers

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The 25 largest business consulting firms worldwide

Ranked by team size

Top 25 of 101,113 business consulting firms worldwide, ranked by team size, largest first. Data refreshed Aug 31, 2026. RevenueBase Smart Search rates how each company's information relates to business consulting firms: 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	Jersey City, NJ, US	10001+	40,360 contacts →
	Indirect evidence “Choosing a digital partner is about more than capabilities, it’s about collaboration and character.” Source: RevenueBase Database · checked Aug 31, 2026
2	Boston Consulting Group BCG	Strong evidence	Boston, MA, US	10001+	38,603 contacts →
	Strong 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 Aug 31, 2026
3	Bain & Company	Indirect evidence	Boston, MA, US	10001+	21,940 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 Aug 31, 2026
4	ZS	Strong evidence	Philadelphia, PA, US	10001+	17,029 contacts →
	Strong 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 Aug 31, 2026
5	Capgemini Invent	Strong evidence	La Defense, FR	10001+	16,082 contacts →
	Strong 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 Aug 31, 2026
6	Alvarez & Marsal	Indirect evidence	New York, NY, US	10001+	12,992 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 Aug 31, 2026
7	Slalom	Strong evidence	Walnut Creek, CA, US	10001+	9,963 contacts →
	Strong 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 Aug 31, 2026
8	Protiviti	Strong evidence	Leeds, GB	5,001-10,000	8,869 contacts →
	Strong 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 Aug 31, 2026
9	Oliver Wyman	Indirect evidence	Wein, AT	5,001-10,000	8,336 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 Aug 31, 2026
10	Wavestone	Strong evidence	New York, US	1,001-5,000	6,248 contacts →
	Strong evidence “Born from the rise of digital innovation, Wavestone has evolved into a leading consulting firm positioned at the convergence of business and technology.” Source: RevenueBase Database · checked Aug 31, 2026
11	Strategy	Indirect evidence	New York, NY, US	1,001-5,000	5,135 contacts →
	Indirect evidence “From strategy to execution.” Source: RevenueBase Database · checked Aug 31, 2026
12	Roland Berger	Indirect evidence	Munich, DE	1,001-5,000	4,653 contacts →
	Indirect evidence “Roland Berger is the only leading global strategy consultancy of European origin.” Source: RevenueBase Database · checked Aug 31, 2026
13	Management Solutions	Strong evidence	Lisbon, PT	1,001-5,000	4,408 contacts →
	Strong evidence “Management Solutions is a leading provider of business consulting services for regulated industries.” Source: RevenueBase Database · checked Aug 31, 2026
14	L.E.K. Consulting	Indirect evidence	Atlanta, GA, US	1,001-5,000	4,059 contacts →
	Indirect evidence “L.E.K.” Source: RevenueBase Database · checked Aug 31, 2026
15	SX Negócios	Indirect evidence	Sorocaba, BR	5,001-10,000	4,017 contacts →
	Indirect evidence “Somos a Pulse Client Experts, uma empresa em constante evolução, impulsionados pela vontade de fazer acontecer.” Source: RevenueBase Database · checked Aug 31, 2026
16	Accenture Dach	Indirect evidence	Hamburg, DE	10001+	3,688 contacts →
	Indirect evidence “Über Accenture: Wir sind die weltweit führenden Berater für Strategie, Management, Digitalisierung, Technologie, Outsourcing und Business Transformation.” Source: RevenueBase Database · checked Aug 31, 2026
17	Alixpartners	Indirect evidence	Zurich, CH	1,001-5,000	3,557 contacts →
	Indirect evidence “For more than forty years, AlixPartners has helped businesses around the world respond quickly and decisively to their most critical challenges – circumstances as diverse as…” Source: RevenueBase Database · checked Aug 31, 2026
18	Armanino	Indirect evidence	St Charles, MO, US	1,001-5,000	2,952 contacts →
	Indirect evidence “Founded as an alternative to the status quo, Armanino doesn’t just keep up with change, we embrace it.” Source: RevenueBase Database · checked Aug 31, 2026
19	SIA	Strong evidence	Atlanta, GA, US	1,001-5,000	2,937 contacts →
	Strong evidence “Sia is an next-generation global consulting group in strategy, artificial intelligence and management.” Source: RevenueBase Database · checked Aug 31, 2026
20	Propia AB	Indirect evidence	Linkoping, SE	n/a	2,447 contacts →
	Indirect evidence “Propia is a Consultant Company offering competence and proven methodology within Operational Excellence.” Source: RevenueBase Database · checked Aug 31, 2026
21	Baringa	Strong evidence	New York, NY, US	1,001-5,000	2,198 contacts →
	Strong evidence “Baringa is a global consulting firm that helps leaders drive meaningful change and create value.” Source: RevenueBase Database · checked Aug 31, 2026
22	Arthur D. Little	Indirect evidence	Paris, FR	1,001-5,000	2,193 contacts →
	Indirect evidence “As people, organizations and societies embrace change at pace, its leaders must anticipate, innovate and transform ever faster.” Source: RevenueBase Database · checked Aug 31, 2026
23	J.S. Held LLC	Indirect evidence	Jericho, NY, US	1,001-5,000	1,924 contacts →
	Indirect evidence “J.S.” Source: RevenueBase Database · checked Aug 31, 2026
24	Columbus	Indirect evidence	Aalborg, DK	1,001-5,000	1,914 contacts →
	Indirect evidence “Columbus is a consultancy company helping organisations drive business value by defining, executing, and evolving their entire business.” Source: RevenueBase Database · checked Aug 31, 2026
25	TENEO	Indirect evidence	Montreal, QC, CA	1,001-5,000	1,913 contacts →
	Indirect evidence “Teneo is the global CEO advisory firm.” Source: RevenueBase Database · checked Aug 31, 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 consulting firms. 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 consulting firms.
Partial evidence: Its own public description names part of business consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name business consulting firms. 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 101,113 business consulting firms worldwide

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Business consulting firms worldwide at a glance

As of Aug 31, 2026

33.9%Verified-email coverage

15.6%Mobile-number coverage

9.1Average contacts per company

1-10Median size (employees)

3.2%Largest-city concentration · London

Aug 31, 2026Page data refreshed

Companies by employee count

1-10

79,376

11-50

16,428

51-200

3,362

201-500

661

501-1,000

250

1,001-5,000

182

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 consulting firms, 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: 44 countries, largest first: the United States, Brazil, the United Kingdom, France, Germany, Canada, Australia, Spain, Italy, the Netherlands and 34 more. Country and city lists for business consulting firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “business consulting firms”. 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 consulting firms), 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 consulting firms, 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, 311,993 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 August 31, 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 consulting firms by location

168 lists · largest first

Every Business consulting firms 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 consulting firms, 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 consulting firms are there worldwide?

RevenueBase identified 101,113 business consulting firms worldwide as of August 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 Jersey City, tops this list with the largest team on record.

Which country has the most business consulting firms?

The United States leads with 32,264 companies, followed by Brazil (9,201) and the United Kingdom (8,463). Every business consulting firms list by country and city is linked on this page.

Which city has the most business consulting firms?

London leads with 3189 headquartered companies, followed by Sao Paulo (2502) and Paris (2009).

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 311,993 verified decision-maker contacts tracked across these 101,113 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on August 31, 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.