Company lists · Data refreshed September 2026

Top 25 Enterprise consulting firms based in the United States

RevenueBase identified 22,988 enterprise consulting firms headquartered in the United States as of September 2026 and tracks 576,301 professional contacts across them, including 209,992 with verified work emails and 144,268 with mobile numbers. New York is the largest hub.

This list covers enterprise consulting firms headquartered in the United States, 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 27, 2026.

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 27, 2026 86% judged on-target in blind review
22,988Companies
576,301Contacts tracked
209,992Verified emails
144,268Mobile numbers
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The 25 largest enterprise consulting firms based in the United States

Ranked by team size
Top 25 of 22,988 enterprise consulting firms based in the United States, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to enterprise 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
1Indirect evidenceNew York, NY, United StatesHQ checked Sep 27, 202610001+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 27, 2026
2Partial evidenceBoston, MA, United StatesHQ checked Sep 27, 202610001+38,730 contacts →

Partial evidence

“Boston Consulting Group partners with leaders in business and society to tackle their most important challenges and capture their greatest opportunities.”

Source: RevenueBase Database · checked Sep 27, 2026
3Indirect evidenceHanover, MD, United StatesHQ checked Sep 27, 202610001+24,693 contacts →

Indirect evidence

“We’re TEKsystems and TEKsystems Global Services.”

Source: RevenueBase Database · checked Sep 27, 2026
4Indirect evidencePlano, TX, United StatesHQ checked Sep 27, 202610001+22,390 contacts →

Indirect evidence

“NTT DATA, Inc.”

Source: RevenueBase Database · checked Sep 27, 2026
5Indirect evidenceBoston, MA, United StatesHQ checked Sep 27, 202610001+21,689 contacts →

Indirect evidence

“Bain & Company is a global consultancy that helps the world’s most ambitious change makers define the future.”

Source: RevenueBase Database · checked Sep 27, 2026
6Partial evidenceEvanston, IL, United StatesHQ checked Sep 27, 202610001+16,896 contacts →

Partial evidence

“ZS is a management consulting and technology firm that partners with companies to improve life and how we live it.”

Source: RevenueBase Database · checked Sep 27, 2026
7Partial evidenceLos Angeles, CA, United StatesHQ checked Sep 27, 202610001+13,486 contacts →

Partial evidence

“Korn Ferry is a global consulting firm that powers performance.”

Source: RevenueBase Database · checked Sep 27, 2026
8Indirect evidenceNew York, NY, United StatesHQ checked Sep 27, 202610001+13,099 contacts →

Indirect evidence

“Alvarez & Marsal is a leading global professional services firm dedicated to helping organizations tackle their most complex business issues, maximize stakeholder value, and…”

Source: RevenueBase Database · checked Sep 27, 2026
9Indirect evidenceNew York, NY, United StatesHQ checked Sep 27, 202610001+12,820 contacts →

Indirect evidence

“At Synechron, we believe in the power of digital to transform businesses for the better.”

Source: RevenueBase Database · checked Sep 27, 2026
10Indirect evidenceMclean, VA, United StatesHQ checked Sep 27, 202610001+12,815 contacts →

Indirect evidence

“Guidehouse is a global AI-led professional services firm delivering advisory, technology, and managed services to the commercial and government sectors.”

Source: RevenueBase Database · checked Sep 27, 2026
11Partial evidenceSeattle, WA, United StatesHQ checked Sep 27, 202610001+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 27, 2026
12Indirect evidenceMaryland Heights, MO, United StatesHQ checked Sep 27, 202610001+9,184 contacts →

Indirect evidence

“We are thinkers and doers.”

Source: RevenueBase Database · checked Sep 27, 2026
13Partial evidenceMenlo Park, CA, United StatesHQ checked Sep 27, 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 27, 2026
14Indirect evidenceNew York, NY, United StatesHQ checked Sep 27, 20265,001-10,0008,230 contacts →

Indirect evidence

“At Oliver Wyman, a Marsh business, we bring deep industry insight, bold innovation, and a collaborative approach that cuts through complexity to help organizations navigate their…”

Source: RevenueBase Database · checked Sep 27, 2026
15Indirect evidenceNew York, NY, United StatesHQ checked Sep 27, 20265,001-10,0008,037 contacts →

Indirect evidence

“We are your global partner in tech-integrated business solutions, turning AI ambition into measurable business impact.”

Source: RevenueBase Database · checked Sep 27, 2026
16Partial evidenceEast Moline, IL, United StatesHQ checked Sep 27, 20265,001-10,0007,769 contacts →

Partial evidence

“YASH Technologies is a consulting-led transformation partner with a proven track record of helping customers address their current and prospective digital transformation…”

Source: RevenueBase Database · checked Sep 27, 2026
17Indirect evidenceChicago, IL, United StatesHQ checked Sep 27, 20265,001-10,0007,520 contacts →

Indirect evidence

“Huron is a global professional services firm that collaborates with organizations to solve complex challenges and achieve ambitious goals.”

Source: RevenueBase Database · checked Sep 27, 2026
18Partial evidenceChicago, IL, United StatesHQ checked Sep 27, 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 27, 2026
19Indirect evidenceChicago, IL, United StatesHQ checked Sep 27, 20265,001-10,0005,514 contacts →

Indirect evidence

“Accenture Strategy combines deep industry expertise, advanced analytics capabilities and human-led design methodologies that enable clients to act with speed and confidence.”

Source: RevenueBase Database · checked Sep 27, 2026
20Indirect evidenceNew York, NY, United StatesHQ checked Sep 27, 20261,001-5,0005,082 contacts →

Indirect evidence

“From strategy to execution.”

Source: RevenueBase Database · checked Sep 27, 2026
21Indirect evidenceBoston, MA, United StatesHQ checked Sep 27, 20261,001-5,0004,093 contacts →

Indirect evidence

“L.E.K.”

Source: RevenueBase Database · checked Sep 27, 2026
22Partial evidenceBethesda, MD, United StatesHQ checked Sep 27, 20265,001-10,0003,741 contacts →

Partial evidence

“DAI is an integrated professional services and advisory firm that provides project design and delivery, management consulting, and financial services to companies, investors, and…”

Source: RevenueBase Database · checked Sep 27, 2026
23Indirect evidenceNew York, NY, United StatesHQ checked Sep 27, 20261,001-5,0003,583 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 27, 2026
24Indirect evidencePrinceton, NJ, United StatesHQ checked Sep 27, 20261,001-5,0003,326 contacts →

Indirect evidence

“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.”

Source: RevenueBase Database · checked Sep 27, 2026
25Indirect evidenceSomerset, NJ, United StatesHQ checked Sep 27, 2026n/a3,285 contacts →

Indirect evidence

“For over 25 years, eTeam has been trusted by global organizations to lead high-stakes programs where execution matters as much as strategy.”

Source: RevenueBase Database · checked Sep 27, 2026

Showing 25 of 22,988 enterprise consulting firms based in the United States

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Enterprise consulting firms based in the United States at a glance

As of Sep 27, 2026
36.4%Verified-email coverage
25.0%Mobile-number coverage
25.1Average contacts per company
1-10Median size (employees)
4.4%Largest-city concentration · New York
Sep 27, 2026Page data refreshed

Companies by employee count

1-10
14,634
11-50
5,188
51-200
2,109
201-500
514
501-1,000
180
1,001-5,000
129
5,001-10,000
31
10001+
40

Freshness & accuracy

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

Email last verified

Median 30.0d

Company record updated

Median 78.0d

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 enterprise 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.
What qualifies
Companies headquartered in the United States whose own description of what they do matches “enterprise 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 enterprise 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 enterprise consulting firms, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
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, 209,992 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 27, 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.

Enterprise consulting firms by metro

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 enterprise 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 enterprise consulting firms are there based in the United States?

RevenueBase identified 22,988 enterprise consulting firms headquartered in the United States 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 city has the most enterprise consulting firms?

New York leads with 1022 headquartered companies, followed by Chicago (595) and Houston (556).

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 209,992 verified decision-maker contacts tracked across these 22,988 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 27, 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.