Company lists · Data refreshed September 2026

Top 25 Business improvement consulting firms worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 23, 2026 60,819 companies tracked

RevenueBase identified 60,819 business improvement consulting firms worldwide as of September 2026 and tracks 433,786 professional contacts across them, including 122,754 with verified work emails and 64,981 with mobile numbers. The United States is the largest market and London the largest hub.

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

60,819Companies

433,786Contacts tracked

122,754Verified emails

64,981Mobile numbers

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The 25 largest business improvement consulting firms worldwide

Ranked by team size

Top 25 of 60,819 business improvement consulting firms worldwide, ranked by team size, largest first. Data refreshed Sep 23, 2026. RevenueBase Smart Search rates how each company's information relates to business improvement 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	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	Protiviti	Partial evidence	Menlo Park, CA, United StatesHQ checked Sep 23, 2026	5,001-10,000	8,779 contacts →
	Partial 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
3	Kearney	Partial evidence	Chicago, IL, United StatesHQ checked Sep 23, 2026	5,001-10,000	6,978 contacts →
	Partial 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
4	Wavestone	Partial evidence	100-101 Terrasse Boieldieu, FranceHQ checked Sep 23, 2026	1,001-5,000	6,190 contacts →
	Partial evidence “Wavestone is a leading consulting firm operating at the intersection of business and technology.” Source: RevenueBase Database · checked Sep 23, 2026
5	Management Solutions	Partial evidence	Madrid, SpainHQ checked Sep 23, 2026	1,001-5,000	4,468 contacts →
	Partial evidence “Management Solutions is a leading provider of business consulting services for regulated industries.” Source: RevenueBase Database · checked Sep 23, 2026
6	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
7	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
8	Alixpartners	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	1,001-5,000	3,583 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
9	Propia AB	Indirect evidence	Norrköping, SwedenHQ checked Sep 23, 2026	n/a	2,448 contacts →
	Indirect evidence “Propia is a Consultant Company offering competence and proven methodology within Operational Excellence.” Source: RevenueBase Database · checked Sep 23, 2026
10	Frost & Sullivan	Indirect evidence	San Antonio, TX, United StatesHQ checked Sep 23, 2026	1,001-5,000	2,330 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
11	MCA	Partial evidence	Westport, CT, United StatesHQ checked Sep 23, 2026	n/a	1,650 contacts →
	Partial evidence “MCAworks is a strategic marketing consulting firm passionately dedicated to helping our clients accelerate and sustain business growth.” Source: RevenueBase Database · checked Sep 23, 2026
12	Argano	Indirect evidence	Plano, TX, United StatesHQ checked Sep 23, 2026	1,001-5,000	1,603 contacts →
	Indirect evidence “Argano is the world’s first and largest digital services consultancy focused exclusively on enabling high performance across our clients’ business operations, at scale and around…” Source: RevenueBase Database · checked Sep 23, 2026
13	FBSPL	Partial evidence	New York, NY, United StatesHQ checked Sep 23, 2026	1,001-5,000	1,224 contacts →
	Partial evidence “FBSPL is an AI-integrated consulting firm that helps businesses enhance efficiency through intelligent processes, technology, and domain expertise.” Source: RevenueBase Database · checked Sep 23, 2026
14	Horváth	Indirect evidence	Stuttgart, GermanyHQ checked Sep 23, 2026	1,001-5,000	1,193 contacts →
	Indirect evidence “Horváth is a global, independent management consultancy with more than 1,400 employees at locations in Europe, the USA, and other global markets.” Source: RevenueBase Database · checked Sep 23, 2026
15	GMS	Partial evidence	Lisbon, PortugalHQ checked Sep 23, 2026	201-500	1,168 contacts →
	Partial evidence “GMS was established in early 2003 to provide strategic, business and IT consulting and changed its name to Maksen in December 2010.” Source: RevenueBase Database · checked Sep 23, 2026
16	Riveron	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 23, 2026	1,001-5,000	1,160 contacts →
	Indirect evidence “With over 1,200 professionals across 18 international offices, Riveron delivers tailored solutions for CFOs, private equity firms, and key stakeholders.” Source: RevenueBase Database · checked Sep 23, 2026
17	W3global	Partial evidence	Frisco, TX, United StatesHQ checked Sep 23, 2026	501-1,000	1,149 contacts →
	Partial evidence “W3Global is a leading provider of end-to-end consulting services, empowering businesses to achieve their strategic goals and optimize their operations.” Source: RevenueBase Database · checked Sep 23, 2026
18	Alpha FMC	Partial evidence	London, IndiaHQ checked Sep 23, 2026	1,001-5,000	1,041 contacts →
	Partial evidence “Alpha Financial Markets Consulting is a leading global consultancy to the financial services industry.” Source: RevenueBase Database · checked Sep 23, 2026
19	Baker Tilly Netherlands	Indirect evidence	Utrecht, NetherlandsHQ checked Sep 23, 2026	1,001-5,000	996 contacts →
	Indirect evidence “Meer dan cijfers: wij zijn jouw partner in groei Bij Baker Tilly kijken we verder.” Source: RevenueBase Database · checked Sep 23, 2026
20	Porsche Consulting	Indirect evidence	Stuttgart, GermanyHQ checked Sep 23, 2026	501-1,000	988 contacts →
	Indirect evidence “As a leading consultancy for putting strategies into practice, we have a clear mission: we generate competitive advantage on the basis of measurable results.” Source: RevenueBase Database · checked Sep 23, 2026
21	Visagio	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 23, 2026	501-1,000	970 contacts →
	Indirect evidence “A Visagio Group company.” Source: RevenueBase Database · checked Sep 23, 2026
22	MAP	Strong evidence	Sherman Oaks, CA, United StatesHQ checked Sep 23, 2026	n/a	912 contacts →
	Strong evidence “We are a Performance Improvement Consulting Firm Increase profitability and productivity with our proven Management System™.” Source: RevenueBase Database · checked Sep 23, 2026
23	Westernacher Consulting	Partial evidence	Heidelberg, United KingdomHQ checked Sep 23, 2026	1,001-5,000	865 contacts →
	Partial evidence “Founded in 1969, Westernacher Consulting operates worldwide, with consultants in Europe, Asia and the Americas.” Source: RevenueBase Database · checked Sep 23, 2026
24	Argon & CO	Indirect evidence	Levallois-perret, FranceHQ checked Sep 23, 2026	1,001-5,000	858 contacts →
	Indirect evidence “Argon & Co is a global management consultancy that specialises in operations strategy and transformation.” Source: RevenueBase Database · checked Sep 23, 2026
25	MEB Energy	Indirect evidence	Umhlanga, South AfricaHQ checked Sep 23, 2026	n/a	840 contacts →
	Indirect evidence “Our unique enthusiastic culture, integrity, honesty, and determination to succeed, coupled with an experience factor, allows us to deliver quality to international standards.” 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 improvement 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 improvement consulting firms.
Partial evidence: Its own public description names part of business improvement 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 improvement 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 60,819 business improvement consulting firms worldwide

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Business improvement consulting firms worldwide at a glance

As of Sep 23, 2026

28.3%Verified-email coverage

15.0%Mobile-number coverage

7.1Average contacts per company

1-10Median size (employees)

2.7%Largest-city concentration · London

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

47,731

11-50

8,852

51-200

1,646

201-500

343

501-1,000

142

1,001-5,000

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 improvement 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: 41 countries, largest first: the United States, Brazil, the United Kingdom, France, Germany, Canada, Australia, Italy, Spain, Mexico and 31 more. Country and city lists for business improvement consulting firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “business improvement 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 improvement 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 improvement 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, 122,754 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 improvement consulting firms by location

235 lists · largest first

Every Business improvement 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 improvement 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 improvement consulting firms are there worldwide?

RevenueBase identified 60,819 business improvement consulting firms 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 improvement consulting firms?

The United States leads with 20,320 companies, followed by Brazil (5,691) and the United Kingdom (5,048). Every business improvement consulting firms list by country and city is linked on this page.

Which city has the most business improvement consulting firms?

London leads with 1647 headquartered companies, followed by Sao Paulo (1476) and Paris (988).

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 122,754 verified decision-maker contacts tracked across these 60,819 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.