Company lists · Data refreshed November 2026

Top 25 Dei consulting firms worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Nov 5, 2026 8,978 companies tracked

RevenueBase identified 8,978 company matches for dei consulting firms worldwide as of November 2026 and tracks 67,216 professional contacts across them, including 14,576 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for dei consulting firms worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 5, 2026. Country and city lists for dei consulting firms follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 SmartSearch · Exact Recorded Nov 5, 2026 How this list was built

8,978Companies

67,216Contacts tracked

14,576Verified emails

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The 25 largest dei consulting firms worldwide

Ranked by team size

Top 25 of 8,978 company matches for dei consulting firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Kpff Consulting Engineers	Exact match	Seattle, ID, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,631 contacts →
	Exact match “KPFF is a multi-office, multi-discipline engineering firm.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2	GEA	Exact match	Milan, ItalyHQ recorded Nov 5, 2026	n/a	1,037 contacts →
	Exact match “Fondata nel 1965, GEA è la società di consulenza di direzione da più tempo al fianco della realtà imprenditoriale italiana e delle aziende del made in Italy.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3	Deloitte Consulting	Exact match	Milan, ItalyHQ recorded Nov 5, 2026	10001+	870 contacts →
	Exact match “Deloitte è tra le più grandi realtà nei servizi professionali alle imprese in Italia, dove è presente da circa 100 anni.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4	Apside	Exact match	Boulogne-billancourt, FranceHQ recorded Nov 5, 2026	1,001-5,000	868 contacts →
	Exact match “We are true to our word Expertise, trust, careers For 36 years, Apside has cooperated with the largest French and European groups on their IT and scientific projects.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5	Sigma Industry	Exact match	Stockholm, SwedenHQ recorded Nov 5, 2026	1,001-5,000	685 contacts →
	Exact match “Sigma Industry har tagit ett långsiktigt åtagande för att förnya konsultbranschen inom ingenjörstjänster.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6	DLC	Exact match	Chicago, IL, United StatesHQ recorded Nov 5, 2026	201-500	577 contacts →
	Exact match “DLC is an award-winning industry leader in Finance, Accounting, Program Management & Process Improvement Consulting.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7	Implid	Exact match	Lyon, FranceHQ recorded Nov 5, 2026	501-1,000	526 contacts →
	Exact match “Depuis plus de 40 ans, nos équipes de spécialistes accompagnent nos clients de petites, moyennes et grandes entreprises, dans le pilotage de leurs organisations, la gestion des…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8	PT Wiratman	Exact match	Jakarta, IndonesiaHQ recorded Nov 5, 2026	201-500	495 contacts →
	Exact match “Established in 1976, PT Wiratman is a full-service multidisciplinary consulting firm, with its headquarters in Jakarta, Indonesia PT Wiratman is an independent, multidisciplinary…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9	Osmani & Company Pvt. LTD	Exact match	Karachi, PakistanHQ recorded Nov 5, 2026	501-1,000	395 contacts →
	Exact match “Osmani & Company Private Limited (OCL) is one of the oldest, largest and most reputed consultancy organizations of Pakistan.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10	Askblue	Exact match	Lisbon, PortugalHQ recorded Nov 5, 2026	201-500	354 contacts →
	Exact match “AskBlue is a company created in 2013 that provides specialized consulting services in the financial sector and information technology.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11	Hspi S.P.A	Exact match	Bologna, ItalyHQ recorded Nov 5, 2026	201-500	326 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12	DSC	Exact match	Giza, EgyptHQ recorded Nov 5, 2026	201-500	273 contacts →
	Exact match “Distance Studio Consultants (DSC) is a multi-disciplinary architecture, engineering, and consulting firm.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13	Semaphores	Exact match	Paris, FranceHQ recorded Nov 5, 2026	201-500	254 contacts →
	Exact match “Semaphores, a consulting and expertise firm, is involved in a very wide range of skills: from public accounting to organizational strategy projects, including organization…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14	GAP Ssma	Exact match	Goiânia, BrazilHQ recorded Nov 5, 2026	201-500	251 contacts →
	Exact match “A GAP Ambiental oferece serviços para pequenas, médias e grandes empresas em diversas áreas que vão desde o licenciamento ao acompanhamento da execução de projetos.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15	Exiom Partners	Exact match	Paris, FranceHQ recorded Nov 5, 2026	51-200	240 contacts →
	Exact match “Fondé en 2019 par des associés de grands cabinets de conseil, Exiom Partners est un cabinet spécialisé dans les Services Financiers pensé pour proposer un modèle de management…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16	LCG	Exact match	Lisbon, PortugalHQ recorded Nov 5, 2026	201-500	240 contacts →
	Exact match “LCG provides consulting services, using their multidisciplinary skills in the areas of strategic and operational management, information systems, management support, business…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17	MSR Consulting Group Gmbh	Exact match	Cologne, GermanyHQ recorded Nov 5, 2026	n/a	231 contacts →
	Exact match “Wir fokussieren uns auf die Branchen Automobil- und Fahrzeugbau, Industrie (insbes.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18	Techsolution	Exact match	São José Dos Pinhais, BrazilHQ recorded Nov 5, 2026	201-500	229 contacts →
	Exact match “Desde 2011, a TECHSOLUTION é parceira estratégica de empresas que buscam eficiência, inovação e resultados sustentáveis no ambiente industrial.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19	Emendo Consulting Group	Exact match	Nordhavn, DenmarkHQ recorded Nov 5, 2026	201-500	225 contacts →
	Exact match “Emendo is Latin and translates to "improve" or "eliminate errors," which perfectly describes our work and what we do.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20	Accretive Solutions	Exact match	Chicago, IL, United StatesHQ recorded Nov 5, 2026	501-1,000	225 contacts →
	Exact match “Your World.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21	Protom	Exact match	Naples, ItalyHQ recorded Nov 5, 2026	201-500	213 contacts →
	Exact match “We support our Clients in their business development, designing and delivering for them knowledge & technology-intensive solutions, products & services SOLUTIONS & PRODUCTS We…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22	Studio Commerciale Associato	Exact match	ItalyHQ recorded Nov 5, 2026	n/a	211 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23	NEW York Technology Partners	Exact match	Jersey City, NJ, United StatesHQ recorded Nov 5, 2026	201-500	206 contacts →
	Exact match “Established in New York Technology Partners is a global IT and Engineering consulting services company with 250+ employees on staff in the US and over $30 million in revenues.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24	Sparke & Keane	Exact match	Eindhoven, NetherlandsHQ recorded Nov 5, 2026	51-200	202 contacts →
	Exact match “Wij zijn experts in Strategy Consulting, Lean Project & Project Management, Digital Transformation, Finance & Control en Business Intelligence.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25	Lattanzio Kibs Benefit Corporation	Exact match	Milan, ItalyHQ recorded Nov 5, 2026	51-200	201 contacts →
	Exact match “Lattanzio KIBS S.p.A.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “dei consulting firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 8,978 dei consulting firms worldwide

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Dei consulting firms worldwide at a glance

As of Nov 5, 2026

21.7%Verified-email coverage

7.5Average contacts per company

1-10Median size (employees)

3.1%Largest-city concentration · London

Nov 5, 2026Page data refreshed

Companies by employee count

1-10

6,699

11-50

1,732

51-200

366

201-500

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

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for dei consulting firms are linked below.
What qualifies: Company records worldwide whose business descriptions match “dei consulting firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 14,576 professional contacts with verified work emails across the full matched dataset. 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 November 5, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Dei consulting firms by location

64 lists · largest first

Every Dei 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 SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “dei consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many dei consulting firms are there worldwide?

RevenueBase identified 8,978 company matches for dei consulting firms worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Kpff Consulting Engineers tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most dei consulting firms?

The United States leads with 2,360 companies, followed by the United Kingdom (528) and Brazil (479). Every dei consulting firms list by country and city is linked on this page.

Which city has the most dei consulting firms?

London leads with 274 company records, followed by Sao Paulo (156) and Paris (149).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 14,576 professional contacts with verified work emails tracked across these 8,978 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 5, 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 SmartSearch, 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.