Company lists · Data refreshed September 2026

Top 25 Business change consultancies worldwide

RevenueBase identified 68,050 business change consultancies worldwide as of September 2026 and tracks 595,082 professional contacts across them, including 198,068 with verified work emails and 85,981 with mobile numbers. The United States is the largest market and London the largest hub.

This list covers business change 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 change 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
68,050Companies
595,082Contacts tracked
198,068Verified emails
85,981Mobile numbers
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The 25 largest business change consultancies worldwide

Ranked by team size
Top 25 of 68,050 business change 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 change 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceNew York, NY, United StatesHQ checked Sep 23, 202610001+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
2Indirect evidenceBoston, MA, United StatesHQ checked Sep 23, 202610001+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
3Indirect evidenceEvanston, IL, United StatesHQ checked Sep 23, 202610001+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
4Indirect evidenceLos Angeles, CA, United StatesHQ checked Sep 23, 202610001+13,486 contacts →

Indirect evidence

“Korn Ferry is a global consulting firm that powers performance.”

Source: RevenueBase Database · checked Sep 23, 2026
5Indirect evidenceNew York, NY, United StatesHQ checked Sep 23, 202610001+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
6Indirect evidenceNew York, NY, United StatesHQ checked Sep 23, 20265,001-10,0008,230 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
7Indirect evidenceStockholm, SwedenHQ checked Sep 23, 20261,001-5,0007,544 contacts →

Indirect evidence

“BTS is a global professional services firm that helps the world’s leading organizations move from strategy to execution at scale.”

Source: RevenueBase Database · checked Sep 23, 2026
8Indirect evidenceChicago, IL, United StatesHQ checked Sep 23, 20265,001-10,0007,520 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
9Indirect evidenceChicago, IL, United StatesHQ checked Sep 23, 20265,001-10,0006,978 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
10Indirect evidence100-101 Terrasse Boieldieu, FranceHQ checked Sep 23, 20261,001-5,0006,190 contacts →

Indirect evidence

“Wavestone is a leading consulting firm operating at the intersection of business and technology.”

Source: RevenueBase Database · checked Sep 23, 2026
11Indirect evidenceChicago, IL, United StatesHQ checked Sep 23, 20265,001-10,0005,514 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
12Indirect evidenceNew York, NY, United StatesHQ checked Sep 23, 20261,001-5,0005,082 contacts →

Indirect evidence

“From strategy to execution.”

Source: RevenueBase Database · checked Sep 23, 2026
13Indirect evidenceMunich, GermanyHQ checked Sep 23, 20261,001-5,0004,632 contacts →

Indirect evidence

“Roland Berger is the only leading global strategy consultancy of European origin.”

Source: RevenueBase Database · checked Sep 23, 2026
14Indirect evidenceMadrid, SpainHQ checked Sep 23, 20261,001-5,0004,468 contacts →

Indirect evidence

“Management Solutions is a leading provider of business consulting services for regulated industries.”

Source: RevenueBase Database · checked Sep 23, 2026
15Indirect evidenceBoston, MA, United StatesHQ checked Sep 23, 20261,001-5,0004,093 contacts →

Indirect evidence

“L.E.K.”

Source: RevenueBase Database · checked Sep 23, 2026
16Indirect evidenceNovo Hamburgo, BrazilHQ checked Sep 23, 20265,001-10,0004,020 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
17Indirect evidenceKronberg Im Taunus, GermanyHQ checked Sep 23, 202610001+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
18Indirect evidenceNew York, NY, United StatesHQ checked Sep 23, 20261,001-5,0003,583 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 Sep 23, 2026
19Indirect evidenceNorrköping, SwedenHQ checked Sep 23, 2026n/a2,448 contacts →

Indirect evidence

“Propia is a Consultant Company offering competence and proven methodology within Operational Excellence.”

Source: RevenueBase Database · checked Sep 23, 2026
20Indirect evidenceSan Antonio, TX, United StatesHQ checked Sep 23, 20261,001-5,0002,330 contacts →

Indirect evidence

“For over six decades, Frost & Sullivan has helped the world’s top companies toward transformational growth journeys that result in a stream of innovative growth opportunities.”

Source: RevenueBase Database · checked Sep 23, 2026
21Partial evidenceBrussels, BelgiumHQ checked Sep 23, 20261,001-5,0002,186 contacts →

Partial evidence

“As people, organizations and societies embrace change at pace, its leaders must anticipate, innovate and transform ever faster.”

Source: RevenueBase Database · checked Sep 23, 2026
22Partial evidenceLondon, United KingdomHQ checked Sep 23, 20261,001-5,0002,179 contacts →

Partial evidence

“Baringa is a global consulting firm that helps leaders drive meaningful change and create value.”

Source: RevenueBase Database · checked Sep 23, 2026
23Indirect evidenceMont-saint-hilaire, QC, CanadaHQ checked Sep 23, 20261,001-5,0001,863 contacts →

Indirect evidence

“We help companies with their challenges and transformation by relying on our sharp business acumen, extensive practical experience and vast technological curiosity.”

Source: RevenueBase Database · checked Sep 23, 2026
24Indirect evidenceAtlanta, GA, United StatesHQ checked Sep 23, 20261,001-5,0001,792 contacts →

Indirect evidence

“North Highland helps businesses move from strategy to reality, taking a pragmatic and practical approach to build solutions that work and create impact that lasts.”

Source: RevenueBase Database · checked Sep 23, 2026
25Indirect evidenceKortrijk, BelgiumHQ checked Sep 23, 20261,001-5,0001,713 contacts →

Indirect evidence

“WHAT do we do?”

Source: RevenueBase Database · checked Sep 23, 2026

Showing 25 of 68,050 business change consultancies worldwide

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Business change consultancies worldwide at a glance

As of Sep 23, 2026
33.3%Verified-email coverage
14.4%Mobile-number coverage
8.7Average contacts per company
1-10Median size (employees)
3.1%Largest-city concentration · London
Sep 23, 2026Page data refreshed

Companies by employee count

1-10
54,963
11-50
10,112
51-200
2,087
201-500
412
501-1,000
158
1,001-5,000
104
5,001-10,000
23
10001+
38

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 change 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
39 countries, largest first: the United States, the United Kingdom, Brazil, France, Germany, Canada, the Netherlands, Australia, Italy, Spain and 29 more. Country and city lists for business change consultancies are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “business change 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 change 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 change 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, 198,068 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 change consultancies by location

275 lists · largest first

Every Business change 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 change 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 change consultancies are there worldwide?

RevenueBase identified 68,050 business change 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 change consultancies?

The United States leads with 19,357 companies, followed by the United Kingdom (6,244) and Brazil (5,638). Every business change consultancies list by country and city is linked on this page.

Which city has the most business change consultancies?

London leads with 2119 headquartered companies, followed by Sao Paulo (1478) and Paris (1441).

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 198,068 verified decision-maker contacts tracked across these 68,050 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.