Company lists · Data refreshed September 2026

Top 25 Customer expansion consulting firms worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 44,807 companies tracked

RevenueBase identified 44,807 customer expansion consulting firms worldwide as of September 2026 and tracks 285,685 professional contacts across them, including 61,118 with verified work emails. The United States is the largest market and London the largest hub.

This list covers customer expansion 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 28, 2026. Country and city lists for customer expansion 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 Sep 28, 2026 86% judged on-target in blind review

44,807Companies

285,685Contacts tracked

61,118Verified emails

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The 25 largest customer expansion consulting firms worldwide

Ranked by team size

Top 25 of 44,807 customer expansion consulting firms worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to customer expansion 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	Slalom	Partial evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	10001+	10,032 contacts →
	Partial 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 28, 2026
2	Protiviti	Partial evidence	Menlo Park, CA, United StatesHQ checked Sep 28, 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 28, 2026
3	Management Solutions	Partial evidence	Madrid, SpainHQ checked Sep 28, 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 28, 2026
4	SX Negócios	Indirect evidence	Novo Hamburgo, BrazilHQ checked Sep 28, 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 28, 2026
5	DEPT	Indirect evidence	Amsterdam, NetherlandsHQ checked Sep 28, 2026	1,001-5,000	3,702 contacts →
	Indirect evidence “DEPT® is a Growth Invention company built to help the world’s most ambitious brands grow faster.” Source: RevenueBase Database · checked Sep 28, 2026
6	Monitor Deloitte	Indirect evidence	United StatesHQ checked Sep 28, 2026	5,001-10,000	3,116 contacts →
	Indirect evidence “To navigate the future with confidence, organizations need to make and act upon the right choices: clear, timely and inspirational choices that deliver growth in a dynamic…” Source: RevenueBase Database · checked Sep 28, 2026
7	Simon-Kucher	Indirect evidence	Bonn, GermanyHQ checked Sep 28, 2026	1,001-5,000	2,873 contacts →
	Indirect evidence “Simon-Kucher is a global consultancy with more than 2,200 employees in 30+ countries.” Source: RevenueBase Database · checked Sep 28, 2026
8	Frost & Sullivan	Indirect evidence	San Antonio, TX, United StatesHQ checked Sep 28, 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 28, 2026
9	MCA	Partial evidence	Westport, CT, United StatesHQ checked Sep 28, 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 28, 2026
10	Emagine	Partial evidence	Copenhagen, DenmarkHQ checked Sep 28, 2026	1,001-5,000	1,636 contacts →
	Partial evidence “emagine is a high-end business & IT consulting company challenging the way businesses leverage high-end expertise.” Source: RevenueBase Database · checked Sep 28, 2026
11	Netambit	Indirect evidence	Noida, IndiaHQ checked Sep 28, 2026	10001+	1,584 contacts →
	Indirect evidence “NetAmbit helps businesses build a sustainable advantage by accelerating growth in high-touch offline areas.” Source: RevenueBase Database · checked Sep 28, 2026
12	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 28, 2026
13	Mallette	Indirect evidence	Québec, QC, CanadaHQ checked Sep 28, 2026	1,001-5,000	1,268 contacts →
	Indirect evidence “Mallette compte plus de 40 bureaux solidement implantés dans plusieurs régions du Québec et regroupe plus de 1 600 ressources œuvrant dans différents secteurs d’activité.” Source: RevenueBase Database · checked Sep 28, 2026
14	AGL - Hakuhodo	Indirect evidence	Gurgaon, IndiaHQ checked Sep 28, 2026	1,001-5,000	1,186 contacts →
	Indirect evidence “In a world progressing towards a digital reality, AGL is invested with its Partner Brands on the journey of enthralling digital transformations.” Source: RevenueBase Database · checked Sep 28, 2026
15	W3global	Partial evidence	Frisco, TX, United StatesHQ checked Sep 28, 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 28, 2026
16	Grupo Lucky	Indirect evidence	Lima, PeruHQ checked Sep 28, 2026	1,001-5,000	1,102 contacts →
	Indirect evidence “En Grupo Lucky llevamos más de treinta años ayudando a empresas líderes a anticiparse al mañana y a tomar las decisiones más relevantes sobre su perfomance en canales comerciales…” Source: RevenueBase Database · checked Sep 28, 2026
17	Alpha FMC	Partial evidence	London, IndiaHQ checked Sep 28, 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 28, 2026
18	Baker Tilly Netherlands	Indirect evidence	Utrecht, NetherlandsHQ checked Sep 28, 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 28, 2026
19	Clark Schaefer Hackett	Indirect evidence	Dayton, OH, United StatesHQ checked Sep 28, 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 28, 2026
20	Prophet	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	501-1,000	661 contacts →
	Partial evidence “Prophet is the Uncommon Growth Company-accelerating impact for business and marketing leaders through consulting, experience, and creative services.” Source: RevenueBase Database · checked Sep 28, 2026
21	Digitize Brand HUB India PVT LTD	Indirect evidence	Pune, IndiaHQ checked Sep 28, 2026	n/a	622 contacts →
	Indirect evidence “We at Digitize Brand pledge to provide unique and innovative solutions to our clients based on their needs.” Source: RevenueBase Database · checked Sep 28, 2026
22	Marketdata	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 28, 2026	201-500	547 contacts →
	Indirect evidence “A Marketdata é uma das mais completas empresas de marketing de relacionamento do mercado latino-americano.” Source: RevenueBase Database · checked Sep 28, 2026
23	Areteans	Strong evidence	Hyderabad, IndiaHQ checked Sep 28, 2026	501-1,000	515 contacts →
	Strong evidence “Credera, a global consulting firm, combines transformational consulting capabilities, deep industry knowledge, and AI and technology expertise to deliver valuable customer…” Source: RevenueBase Database · checked Sep 28, 2026
24	Virtual Connection	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 28, 2026	1,001-5,000	504 contacts →
	Indirect evidence “A Virtual Connection é uma empresa empreendedora, com espírito inovativo que constantemente busca alavancar resultados financeiros em nossos clientes através de ferramentas como…” Source: RevenueBase Database · checked Sep 28, 2026
25	GVA	Indirect evidence	Paris, FranceHQ checked Sep 28, 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 28, 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: customer expansion 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 customer expansion consulting firms.
Partial evidence: Its own public description names part of customer expansion consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name customer expansion 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 44,807 customer expansion consulting firms worldwide

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Customer expansion consulting firms worldwide at a glance

As of Sep 28, 2026

21.4%Verified-email coverage

6.4Average contacts per company

1-10Median size (employees)

2.3%Largest-city concentration · London

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

35,086

11-50

7,852

51-200

1,335

201-500

274

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 customer expansion 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: Every country. Country and city lists for customer expansion consulting firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “customer expansion 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 customer expansion 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 customer expansion 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, 61,118 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 28, 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.

Customer expansion consulting firms by location

181 lists · largest first

Every Customer expansion 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 customer expansion 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 customer expansion consulting firms are there worldwide?

RevenueBase identified 44,807 customer expansion 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?

Slalom, headquartered in Seattle, tops this list with the largest team on record.

Which country has the most customer expansion consulting firms?

The United States leads with 12,066 companies, followed by the United Kingdom (2,471) and Brazil (2,208). Every customer expansion consulting firms list by country and city is linked on this page.

Which city has the most customer expansion consulting firms?

London leads with 1020 headquartered companies, followed by Sao Paulo (622) and New York (617).

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 61,118 verified decision-maker contacts tracked across these 44,807 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 28, 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.