Company lists · Data refreshed September 2026

Top 25 Administrative consulting firms worldwide

RevenueBase identified 63,010 administrative consulting firms worldwide as of September 2026 and tracks 411,959 professional contacts across them, including 112,485 with verified work emails and 62,126 with mobile numbers. The United States is the largest market and Sao Paulo the largest hub.

This list covers administrative 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 administrative 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 28, 2026 86% judged on-target in blind review
63,010Companies
411,959Contacts tracked
112,485Verified emails
62,126Mobile numbers
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The 25 largest administrative consulting firms worldwide

Ranked by team size
Top 25 of 63,010 administrative 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 administrative 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceMenlo Park, CA, United StatesHQ checked Sep 28, 20265,001-10,0008,779 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
2Partial evidenceChicago, IL, United StatesHQ checked Sep 28, 20265,001-10,0006,978 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 28, 2026
3Partial evidenceMadrid, SpainHQ checked Sep 28, 20261,001-5,0004,468 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 28, 2026
4Indirect evidenceBoston, MA, United StatesHQ checked Sep 28, 20261,001-5,0004,093 contacts →

Indirect evidence

“L.E.K.”

Source: RevenueBase Database · checked Sep 28, 2026
5Partial evidenceBoston, MA, United StatesHQ checked Sep 28, 20261,001-5,0002,694 contacts →

Partial evidence

“Public Consulting Group (PCG) is a leading public sector solutions implementation and operations improvement firm that partners with health, education, and human services agencies…”

Source: RevenueBase Database · checked Sep 28, 2026
6Partial evidenceLondon, United KingdomHQ checked Sep 28, 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 28, 2026
7Indirect evidenceJericho, NY, PalestineHQ checked Sep 28, 20261,001-5,0001,954 contacts →

Indirect evidence

“J.S.”

Source: RevenueBase Database · checked Sep 28, 2026
8Indirect evidenceSp, BrazilHQ checked Sep 28, 20261,001-5,0001,791 contacts →

Indirect evidence

“Presidida por Raul Corrêa da Silva, a BDO RCS foi fundada em 2001 e desde então mantém participação expressiva no mercado de auditorias.”

Source: RevenueBase Database · checked Sep 28, 2026
9Partial evidenceBoston, MA, United StatesHQ checked Sep 28, 20261,001-5,0001,781 contacts →

Partial evidence

“Analysis Group is one of the largest international economics consulting firms, with more than 1,500 professionals across 15 offices in North America, Europe, and Asia.”

Source: RevenueBase Database · checked Sep 28, 2026
10Indirect evidenceAmersfoort, NetherlandsHQ checked Sep 28, 20261,001-5,0001,755 contacts →

Indirect evidence

“BMC is opgericht vanuit de overtuiging dat de bedrijfsvoering binnen de overheid kon worden verbeterd.”

Source: RevenueBase Database · checked Sep 28, 2026
11Indirect evidenceStockholm, SwedenHQ checked Sep 28, 2026n/a1,623 contacts →

Indirect evidence

“Governo är ett managementkonsultbolag som har en vision om ett attraktivt samhälle i takt med framtiden.”

Source: RevenueBase Database · checked Sep 28, 2026
12Partial evidenceAndover, MA, United StatesHQ checked Sep 28, 2026201-5001,480 contacts →

Partial evidence

“ALKU® is a highly specialized consulting services firm focused on deploying highly skilled consulting resources in the areas of Technologies, HCIT, Life Sciences, and Government…”

Source: RevenueBase Database · checked Sep 28, 2026
13Partial evidenceBoston, MA, United StatesHQ checked Sep 28, 20261,001-5,0001,479 contacts →

Partial evidence

“Charles River Associates (CRA) is a global consulting firm specializing in litigation, regulatory, financial, and management consulting.”

Source: RevenueBase Database · checked Sep 28, 2026
14Indirect evidenceStuttgart, GermanyHQ checked Sep 28, 20261,001-5,0001,442 contacts →

Indirect evidence

“Wollen Sie jemanden, der Sie auch beim Sprung in neue Märkte und bei allen anstehenden Herausforderungen begleitet?”

Source: RevenueBase Database · checked Sep 28, 2026
15Partial evidenceKent, OH, United StatesHQ checked Sep 28, 20261,001-5,0001,395 contacts →

Partial evidence

“Davey Resource Group, Inc.(DRG) provides innovative consulting and field services that support utility infrastructure and environmental stewardship.”

Source: RevenueBase Database · checked Sep 28, 2026
16Strong evidenceMilan, ItalyHQ checked Sep 28, 20261,001-5,0001,304 contacts →

Strong evidence

“Intellera Consulting is a consulting company born from the buyout management of the PwC Public administration and Healthcare branch.”

Source: RevenueBase Database · checked Sep 28, 2026
17Indirect evidenceMiami, FL, United StatesHQ checked Sep 28, 20261,001-5,0001,260 contacts →

Indirect evidence

“Expertly balancing experience and innovation to deliver unique solutions to public and private clients.”

Source: RevenueBase Database · checked Sep 28, 2026
18Indirect evidenceKifisia, GreeceHQ checked Sep 28, 20261,001-5,0001,171 contacts →

Indirect evidence

“Η Accenture είναι ηγέτιδα εταιρεία παροχής συμβουλευτικών υπηρεσιών σε παγκόσμιο επίπεδο, δημιουργώντας απτή αξία με ταχύτητα και σε μεγάλη κλίμακα.”

Source: RevenueBase Database · checked Sep 28, 2026
19Indirect evidenceDallas, TX, United StatesHQ checked Sep 28, 20261,001-5,0001,160 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 28, 2026
20Partial evidenceNew York, NY, United StatesHQ checked Sep 28, 20261,001-5,0001,149 contacts →

Partial evidence

“Segal is a leading employee-owned consulting firm with more than 1,100 professionals across North America, including 150+ credentialed actuaries.”

Source: RevenueBase Database · checked Sep 28, 2026
21Partial evidenceFrisco, TX, United StatesHQ checked Sep 28, 2026501-1,0001,149 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
22Indirect evidenceSaint-doulchard, FranceHQ checked Sep 28, 20261,001-5,0001,051 contacts →

Indirect evidence

“Une vision augmentée du conseil au service de votre réussite.”

Source: RevenueBase Database · checked Sep 28, 2026
23Partial evidenceParis, SingaporeHQ checked Sep 28, 2026501-1,000868 contacts →

Partial evidence

“Accuracy is a wholly independent international consulting firm providing advice to company management and shareholders for their strategic or critical decisions, notably in…”

Source: RevenueBase Database · checked Sep 28, 2026
24Partial evidenceNew York, NY, United StatesHQ checked Sep 28, 2026501-1,000765 contacts →

Partial evidence

“The Vertex Companies, LLC is a global consulting firm that provides strategic advisory, project management, and dispute resolution services for organizations that face complex…”

Source: RevenueBase Database · checked Sep 28, 2026
25Indirect evidenceNeuilly Sur Seine, FranceHQ checked Sep 28, 2026501-1,000719 contacts →

Indirect evidence

“Square Management est un cabinet de conseil spécialisé en stratégie et organisation qui accompagne ses clients dans l’anticipation, la conception et la réalisation de leurs…”

Source: RevenueBase Database · checked Sep 28, 2026

Showing 25 of 63,010 administrative consulting firms worldwide

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Administrative consulting firms worldwide at a glance

As of Sep 28, 2026
27.3%Verified-email coverage
15.1%Mobile-number coverage
6.5Average contacts per company
1-10Median size (employees)
2.9%Largest-city concentration · Sao Paulo
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
49,056
11-50
11,334
51-200
1,963
201-500
353
501-1,000
102
1,001-5,000
95
5,001-10,000
20
10001+
26

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 administrative 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
37 countries, largest first: the United States, Brazil, France, Italy, Spain, Germany, the United Kingdom, Canada, Mexico, the Netherlands and 27 more. Country and city lists for administrative consulting firms are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “administrative 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 administrative 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 administrative 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, 112,485 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.

Administrative consulting firms by location

271 lists · largest first

Every Administrative 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 administrative 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 administrative consulting firms are there worldwide?

RevenueBase identified 63,010 administrative 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?

Protiviti, headquartered in Menlo Park, tops this list with the largest team on record.

Which country has the most administrative consulting firms?

The United States leads with 18,155 companies, followed by Brazil (7,703) and France (5,024). Every administrative consulting firms list by country and city is linked on this page.

Which city has the most administrative consulting firms?

Sao Paulo leads with 1827 headquartered companies, followed by Paris (1322) and London (1023).

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 112,485 verified decision-maker contacts tracked across these 63,010 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.