Company lists · Data refreshed September 2026

Top 25 B2B consultancy services based in the United States

Name: B2B consultancy services based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 23, 2026 33,396 companies tracked

RevenueBase identified 33,396 company matches for B2B consultancy services associated with the United States as of September 2026 and tracks 569,914 professional contacts across them, including 208,605 with verified work emails and 158,631 with mobile numbers. New York is the largest hub.

This list covers company matches for B2B consultancy services associated with the United States, 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 September 23, 2026.

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 Sep 23, 2026 How this list was built

33,396Companies

569,914Contacts tracked

208,605Verified emails

158,631Mobile numbers

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest B2B consultancy services based in the United States

Ranked by team size

Top 25 of 33,396 company matches for B2B consultancy services based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 23, 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	EXL	Exact match	New York, NY, United StatesHQ recorded Sep 23, 2026	10001+	40,100 contacts →
	Exact match “Choosing a digital partner is about more than capabilities, it’s about collaboration and character.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
2	Boston Consulting Group BCG	Exact match	Boston, MA, United StatesHQ recorded Sep 23, 2026	10001+	38,730 contacts →
	Exact match “Boston Consulting Group partners with leaders in business and society to tackle their most important challenges and capture their greatest opportunities.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
3	Teksystems	Exact match	Hanover, MD, United StatesHQ recorded Sep 23, 2026	10001+	24,693 contacts →
	Exact match “We’re TEKsystems and TEKsystems Global Services.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
4	NTT Data North America	Exact match	Plano, TX, United StatesHQ recorded Sep 23, 2026	10001+	22,390 contacts →
	Exact match “NTT DATA, Inc.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
5	Bain & Company	Exact match	Boston, MA, United StatesHQ recorded Sep 23, 2026	10001+	21,689 contacts →
	Exact match “Bain & Company is a global consultancy that helps the world’s most ambitious change makers define the future.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
6	ZS	Exact match	Evanston, IL, United StatesHQ recorded Sep 23, 2026	10001+	16,896 contacts →
	Exact match “ZS is a management consulting and technology firm that partners with companies to improve life and how we live it.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
7	CDW	Exact match	Vernon Hills, IL, United StatesHQ recorded Sep 23, 2026	10001+	13,155 contacts →
	Exact match “At CDW, we know how to make technology work so people can do great things.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
8	Alvarez & Marsal	Exact match	New York, NY, United StatesHQ recorded Sep 23, 2026	10001+	13,099 contacts →
	Exact match “Alvarez & Marsal is a leading global professional services firm dedicated to helping organizations tackle their most complex business issues, maximize stakeholder value, and…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
9	Slalom	Exact match	Seattle, WA, United StatesHQ recorded Sep 23, 2026	10001+	10,032 contacts →
	Exact match “Slalom is a fiercely human business and technology consulting company that leads with outcomes to bring more value, in all ways, always.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
10	World Wide Technology	Exact match	Maryland Heights, MO, United StatesHQ recorded Sep 23, 2026	10001+	9,184 contacts →
	Exact match “We are thinkers and doers.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
11	Protiviti	Exact match	Menlo Park, CA, United StatesHQ recorded Sep 23, 2026	5,001-10,000	8,779 contacts →
	Exact match “Protiviti is a global consulting firm that delivers deep expertise, objective insights, a tailored approach and unparalleled collaboration to help leaders confidently face the…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
12	Yash Technologies	Exact match	East Moline, IL, United StatesHQ recorded Sep 23, 2026	5,001-10,000	7,769 contacts →
	Exact match “YASH Technologies is a consulting-led transformation partner with a proven track record of helping customers address their current and prospective digital transformation…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
13	HURON	Exact match	Chicago, IL, United StatesHQ recorded Sep 23, 2026	5,001-10,000	7,520 contacts →
	Exact match “Huron is a global professional services firm that collaborates with organizations to solve complex challenges and achieve ambitious goals.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
14	Kearney	Exact match	Chicago, IL, United StatesHQ recorded Sep 23, 2026	5,001-10,000	6,978 contacts →
	Exact match “As one of the original firms, we’ve never lost sight of the fact that consulting is a people business.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
15	Accenture Strategy & Consulting	Exact match	Chicago, IL, United StatesHQ recorded Sep 23, 2026	5,001-10,000	5,514 contacts →
	Exact match “Accenture Strategy combines deep industry expertise, advanced analytics capabilities and human-led design methodologies that enable clients to act with speed and confidence.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
16	Strategy	Exact match	New York, NY, United StatesHQ recorded Sep 23, 2026	1,001-5,000	5,082 contacts →
	Exact match “From strategy to execution.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
17	L.E.K. Consulting	Exact match	Boston, MA, United StatesHQ recorded Sep 23, 2026	1,001-5,000	4,093 contacts →
	Exact match “L.E.K.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
18	Alixpartners	Exact match	New York, NY, United StatesHQ recorded Sep 23, 2026	1,001-5,000	3,583 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
19	Withum	Exact match	Princeton, NJ, United StatesHQ recorded Sep 23, 2026	1,001-5,000	3,326 contacts →
	Exact match “Withum is a forward-thinking, technology-driven advisory and accounting firm, helping clients to Be in a Position of Strength in today’s modern business landscape.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
20	ETEAM	Exact match	Somerset, NJ, United StatesHQ recorded Sep 23, 2026	n/a	3,285 contacts →
	Exact match “For over 25 years, eTeam has been trusted by global organizations to lead high-stakes programs where execution matters as much as strategy.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
21	Wipfli	Exact match	Milwaukee, WI, United StatesHQ recorded Sep 23, 2026	1,001-5,000	3,047 contacts →
	Exact match “Always advancing.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
22	Armanino	Exact match	San Ramon, CA, United StatesHQ recorded Sep 23, 2026	1,001-5,000	2,989 contacts →
	Exact match “Founded as an alternative to the status quo, Armanino doesn’t just keep up with change, we embrace it.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
23	VEE Technologies	Exact match	Decatur, GA, United StatesHQ recorded Sep 23, 2026	5,001-10,000	2,933 contacts →
	Exact match “Vee Technologies is a global consulting and professional services organization delivering specialized, technology-enabled solutions.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
24	Speridian Technologies	Exact match	Albuquerque, NM, United StatesHQ recorded Sep 23, 2026	1,001-5,000	2,619 contacts →
	Exact match “Speridian Technologies is a global consulting and technology services firm that helps enterprises and public sector organizations modernize operations, enhance customer experience…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
25	Frost & Sullivan	Exact match	San Antonio, TX, United StatesHQ recorded Sep 23, 2026	1,001-5,000	2,330 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 23, 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 “B2B consultancy services”. 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 33,396 B2B consultancy services based in the United States

See the full list, filter by size, metro and specialty, and access 208,605 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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B2B consultancy services based in the United States at a glance

As of Sep 23, 2026

36.6%Verified-email coverage

27.8%Mobile-number coverage

17.1Average contacts per company

1-10Median size (employees)

4.6%Largest-city concentration · New York

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

24,750

11-50

5,971

51-200

1,907

201-500

437

501-1,000

145

1,001-5,000

102

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 26.0d

154,0790–30

47,76231–60

3,62861–90

20090–180

2,936180+

Company record updated

Median 75.0d

00–30

158,88931–60

249,83561–90

130,41090–180

30,780180+

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.
What qualifies: Company records associated with the United States whose business descriptions match “B2B consultancy services” 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 208,605 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 September 23, 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.

B2B consultancy services by metro

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 “B2B consultancy services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many B2B consultancy services are there based in the United States?

RevenueBase identified 33,396 company matches for B2B consultancy services associated with the United States as of September 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?

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

Which city has the most B2B consultancy services?

New York leads with 1552 company records, followed by Atlanta (817) and Chicago (792).

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 208,605 professional contacts with verified work emails tracked across these 33,396 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 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 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.