Company lists · Data refreshed September 2026

Top 25 Global IT consulting firms based in the United States

Name: Global IT consulting firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 16,300 companies tracked

RevenueBase identified 16,300 company matches for global IT consulting firms associated with the United States as of September 2026 and tracks 765,520 professional contacts across them, including 216,273 with verified work emails and 141,779 with mobile numbers. New York is the largest hub.

This list covers company matches for global IT consulting firms 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 30, 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 30, 2026 How this list was built

16,300Companies

765,520Contacts tracked

216,273Verified emails

141,779Mobile numbers

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The 25 largest global IT consulting firms based in the United States

Ranked by team size

Top 25 of 16,300 company matches for global IT consulting firms based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 30, 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	DXC Technology	Exact match	Ashburn, VA, United StatesHQ recorded Sep 30, 2026	10001+	82,768 contacts →
	Exact match “DXC Technology helps global companies run their mission-critical systems and operations while modernizing IT, optimizing data architectures, and ensuring security and scalability…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
2	Virtusa	Exact match	Southborough, MA, United StatesHQ recorded Sep 30, 2026	10001+	29,613 contacts →
	Exact match “Virtusa is a global product and platform engineering services company that makes experiences better with technology.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
3	Teksystems	Exact match	Hanover, MD, United StatesHQ recorded Sep 30, 2026	10001+	24,693 contacts →
	Exact match “We’re TEKsystems and TEKsystems Global Services.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
4	NTT Data North America	Exact match	Plano, TX, United StatesHQ recorded Sep 30, 2026	10001+	22,390 contacts →
	Exact match “NTT DATA, Inc.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
5	Unisys	Exact match	Blue Bell, PA, United StatesHQ recorded Sep 30, 2026	10001+	18,676 contacts →
	Exact match “Unisys is a global technology solutions company that powers breakthroughs for the world’s leading organizations.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
6	Insight Global	Exact match	Atlanta, GA, United StatesHQ recorded Sep 30, 2026	n/a	15,553 contacts →
	Exact match “Insight Global is an international talent and consulting company that delivers business outcomes in an ever-changing world.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
7	CDW	Exact match	Vernon Hills, IL, United StatesHQ recorded Sep 30, 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 30, 2026 · View company records in RevenueBase
8	Infinite Computer Solutions	Exact match	Rockville, MD, United StatesHQ recorded Sep 30, 2026	10001+	12,891 contacts →
	Exact match “Infinite is a.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
9	Synechron	Exact match	New York, NY, United StatesHQ recorded Sep 30, 2026	10001+	12,820 contacts →
	Exact match “At Synechron, we believe in the power of digital to transform businesses for the better.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
10	Guidehouse	Exact match	Mclean, VA, United StatesHQ recorded Sep 30, 2026	10001+	12,815 contacts →
	Exact match “Guidehouse is a global AI-led professional services firm delivering advisory, technology, and managed services to the commercial and government sectors.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
11	Movate	Exact match	Plano, TX, United StatesHQ recorded Sep 30, 2026	10001+	12,237 contacts →
	Exact match “Movate is a digital technology and customer experience services company committed to disrupting the industry with boundless agility, human-centered innovation, and relentless…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
12	Apex Systems	Exact match	Glen Allen, VA, United StatesHQ recorded Sep 30, 2026	1,001-5,000	12,231 contacts →
	Exact match “Everforth Apex Systems, part of the Everforth ™ Network, is a leading global technology services company specializing in customizable industry-specific solutions that turns…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
13	Thoughtworks	Exact match	Chicago, IL, United StatesHQ recorded Sep 30, 2026	10001+	11,634 contacts →
	Exact match “We are a global technology consultancy that delivers extraordinary impact by blending design, engineering and AI expertise.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
14	Slalom	Exact match	Seattle, WA, United StatesHQ recorded Sep 30, 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 30, 2026 · View company records in RevenueBase
15	World Wide Technology	Exact match	Maryland Heights, MO, United StatesHQ recorded Sep 30, 2026	10001+	9,184 contacts →
	Exact match “We are thinkers and doers.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
16	HTC Global Services	Exact match	Troy, MI, United StatesHQ recorded Sep 30, 2026	10001+	8,866 contacts →
	Exact match “HTC Global Services Inc, founded in 1990, headquartered in Troy, Michigan, is a global provider of Information Technology and Business Process Services and Solutions.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
17	Protiviti	Exact match	Menlo Park, CA, United StatesHQ recorded Sep 30, 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 30, 2026 · View company records in RevenueBase
18	Ci&t	Exact match	New York, NY, United StatesHQ recorded Sep 30, 2026	5,001-10,000	8,037 contacts →
	Exact match “We are your global partner in tech-integrated business solutions, turning AI ambition into measurable business impact.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
19	Yash Technologies	Exact match	East Moline, IL, United StatesHQ recorded Sep 30, 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 30, 2026 · View company records in RevenueBase
20	Atos Syntel	Exact match	Troy, MI, United StatesHQ recorded Sep 30, 2026	10001+	7,339 contacts →
	Exact match “Atos\|Syntel is a leading global provider of integrated information technology and knowledge process services.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
21	SHI International Corp	Exact match	Somerset, NJ, United StatesHQ recorded Sep 30, 2026	5,001-10,000	6,734 contacts →
	Exact match “Think of SHI as your personal technology concierge.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
22	Isoftstone	Exact match	Plano, TX, United StatesHQ recorded Sep 30, 2026	10001+	4,041 contacts →
	Exact match “iSoftStone is a global IT service and consulting company that creates value and drives success through technology solutions, service excellence, and digital innovation.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
23	RGP	Exact match	Dallas, TX, United StatesHQ recorded Sep 30, 2026	1,001-5,000	3,650 contacts →
	Exact match “RGP (Nasdaq: RGP) is an award-winning global professional services firm with three decades of experience helping the world’s top organizations navigate change and seize…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
24	Connection	Exact match	Merrimack, NH, United StatesHQ recorded Sep 30, 2026	1,001-5,000	3,461 contacts →
	Exact match “As a Global IT Solutions Provider, we connect people with technology that enhances growth, elevates productivity, and empowers innovation.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
25	ETEAM	Exact match	Somerset, NJ, United StatesHQ recorded Sep 30, 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 30, 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 “global IT 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 16,300 global IT consulting firms based in the United States

See the full list, filter by size, metro and specialty, and access 216,273 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Global IT consulting firms based in the United States at a glance

As of Sep 30, 2026

28.3%Verified-email coverage

18.5%Mobile-number coverage

47.0Average contacts per company

11-50Median size (employees)

3.7%Largest-city concentration · New York

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

6,923

11-50

5,348

51-200

2,817

201-500

740

501-1,000

288

1,001-5,000

194

5,001-10,000

10001+

Freshness & accuracy

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

Email last verified

Median 32.0d

62,3390–30

141,30931–60

7,77461–90

27090–180

4,581180+

Company record updated

Median 93.0d

00–30

79,73131–60

262,54661–90

377,65890–180

45,585180+

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 “global IT 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. 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 216,273 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 30, 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.

Global IT consulting firms 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 “global IT consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many global IT consulting firms are there based in the United States?

RevenueBase identified 16,300 company matches for global IT consulting firms 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?

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

Which city has the most global IT consulting firms?

New York leads with 598 company records, followed by Houston (374) and Dallas (344).

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 216,273 professional contacts with verified work emails tracked across these 16,300 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 30, 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.