Company lists · Data refreshed September 2026

Top 25 IT consulting companies for government worldwide

RevenueBase identified 31,585 IT consulting companies for government worldwide as of September 2026 and tracks 989,014 professional contacts across them, including 246,470 with verified work emails. The United States is the largest market and London the largest hub.

This list covers IT consulting companies for government 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 IT consulting companies for government 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
31,585Companies
989,014Contacts tracked
246,470Verified emails
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The 25 largest IT consulting companies for government worldwide

Ranked by team size
Top 25 of 31,585 IT consulting companies for government worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to IT consulting companies for government: 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 evidenceAshburn, VA, United StatesHQ checked Sep 28, 202610001+82,768 contacts →

Partial evidence

“DXC Technology helps global companies run their mission-critical systems and operations while modernizing IT, optimizing data architectures, and ensuring security and scalability…”

Source: RevenueBase Database · checked Sep 28, 2026
2Partial evidenceTokyo, JapanHQ checked Sep 28, 202610001+38,436 contacts →

Partial evidence

“NTT DATA – a part of NTT Group – IT and business services headquartered in Tokyo.”

Source: RevenueBase Database · checked Sep 28, 2026
3Indirect evidenceVancouver, BC, CanadaHQ checked Sep 28, 202610001+38,300 contacts →

Indirect evidence

“TELUS Digital crafts unique and enduring experiences for customers and employees, and creates future-focused digital transformations that stand the test of time.”

Source: RevenueBase Database · checked Sep 28, 2026
4Partial evidenceReston, VA, United StatesHQ checked Sep 28, 202610001+27,416 contacts →

Partial evidence

“Leidos is an industry and technology leader serving government & commercial customers with smarter, more efficient digital and mission innovations.”

Source: RevenueBase Database · checked Sep 28, 2026
5Indirect evidenceFalls Church, VA, United StatesHQ checked Sep 28, 202610001+23,974 contacts →

Indirect evidence

“GDIT is a global technology and professional services company that delivers solutions, technology and mission services to every major agency across the U.S.”

Source: RevenueBase Database · checked Sep 28, 2026
6Partial evidenceMclean, VA, United StatesHQ checked Sep 28, 202610001+12,815 contacts →

Partial 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 28, 2026
7Partial evidenceMandaluyong, PhilippinesHQ checked Sep 28, 202610001+11,174 contacts →

Partial evidence

“Accenture is a leading global professional services company that helps the world’s leading businesses, governments and other organizations build their digital core, optimize their…”

Source: RevenueBase Database · checked Sep 28, 2026
8Indirect evidenceHerndon, VA, United StatesHQ checked Sep 28, 20265,001-10,0009,697 contacts →

Indirect evidence

“MANTECH is more than a technology company.”

Source: RevenueBase Database · checked Sep 28, 2026
9Indirect evidenceLondon, United KingdomHQ checked Sep 28, 202610001+9,653 contacts →

Indirect evidence

“For over two decades, we have been harnessing technology to drive meaningful change.”

Source: RevenueBase Database · checked Sep 28, 2026
10Partial evidenceArlington, VA, United StatesHQ checked Sep 28, 202610001+9,125 contacts →

Partial evidence

“We power reinvention across the US federal government to help agencies deliver greater outcomes using proven commercial solutions, mission expertise, and new technologies – cloud…”

Source: RevenueBase Database · checked Sep 28, 2026
11Partial evidenceLahore, PakistanHQ checked Sep 28, 20265,001-10,0007,672 contacts →

Partial evidence

“Systems Limited is a globally recognized IT software solution company offering state-of-the-art professional services and BPO offerings in the technology landscape.”

Source: RevenueBase Database · checked Sep 28, 2026
12Indirect evidenceRiyadh, Saudi ArabiaHQ checked Sep 28, 20261,001-5,0006,982 contacts →

Indirect evidence

“Elm is the leading provider of innovative secure services & solutions to both public and private sectors in Saudi Arabia.”

Source: RevenueBase Database · checked Sep 28, 2026
13Indirect evidencePlano, TX, United StatesHQ checked Sep 28, 20265,001-10,0006,842 contacts →

Indirect evidence

“Tyler Technologies (NYSE: TYL) provides integrated software and technology services to the public sector.”

Source: RevenueBase Database · checked Sep 28, 2026
14Indirect evidenceSomerset, NJ, United StatesHQ checked Sep 28, 20265,001-10,0006,734 contacts →

Indirect evidence

“Think of SHI as your personal technology concierge.”

Source: RevenueBase Database · checked Sep 28, 2026
15Indirect evidenceBarcelona, SpainHQ checked Sep 28, 20265,001-10,0006,133 contacts →

Indirect evidence

“At SEIDOR we help drive the transformation and competitiveness of our clients through technology and innovation, always focusing on the human value and prioritizing talents and…”

Source: RevenueBase Database · checked Sep 28, 2026
16Indirect evidenceAuckland, New ZealandHQ checked Sep 28, 20265,001-10,0005,958 contacts →

Indirect evidence

“Customer focused values.”

Source: RevenueBase Database · checked Sep 28, 2026
17Indirect evidenceParis, FranceHQ checked Sep 28, 202610001+4,928 contacts →

Indirect evidence

“Le groupe SII est une société d’ingénierie et de conseil en technologies (ICT) et une entreprise de services numériques (ESN) créée en 1979 par Bernard HUVÉ, ingénieur de…”

Source: RevenueBase Database · checked Sep 28, 2026
18Indirect evidenceHasselt, BelgiumHQ checked Sep 28, 20265,001-10,0004,551 contacts →

Indirect evidence

“The digital world moves fast.”

Source: RevenueBase Database · checked Sep 28, 2026
19Indirect evidenceReston, VA, United StatesHQ checked Sep 28, 20265,001-10,0004,542 contacts →

Indirect evidence

“ASRC Federal’s employees provide solutions for more than 30 U.S.”

Source: RevenueBase Database · checked Sep 28, 2026
20Indirect evidenceSanta Clara, CA, United StatesHQ checked Sep 28, 202610001+4,302 contacts →

Indirect evidence

“Aricent is now Altran, delivering industry innovations at future speed.”

Source: RevenueBase Database · checked Sep 28, 2026
21Indirect evidenceAustin, TX, United StatesHQ checked Sep 28, 20261,001-5,0003,206 contacts →

Indirect evidence

“At Quest Software, we help organizations build modern, trusted foundations for AI.”

Source: RevenueBase Database · checked Sep 28, 2026
22Indirect evidenceZaragoza, United KingdomHQ checked Sep 28, 20261,001-5,0003,165 contacts →

Indirect evidence

“Somos una compañía especializada en TIC, consultoría tecnológica y transformación digital.”

Source: RevenueBase Database · checked Sep 28, 2026
23Indirect evidenceRiyadh, Saudi ArabiaHQ checked Sep 28, 20261,001-5,0003,050 contacts →

Indirect evidence

“ejada is a leading technology solutions provider in the Middle East and North Africa (MENA) region, headquartered in Saudi Arabia since 2005.”

Source: RevenueBase Database · checked Sep 28, 2026
24Partial evidenceDecatur, GA, United StatesHQ checked Sep 28, 20265,001-10,0002,933 contacts →

Partial evidence

“Vee Technologies is a global consulting and professional services organization delivering specialized, technology-enabled solutions.”

Source: RevenueBase Database · checked Sep 28, 2026
25Indirect evidenceTysons, VA, United StatesHQ checked Sep 28, 20261,001-5,0002,580 contacts →

Indirect evidence

“LMI is a new breed of digital solutions provider, disrupting the traditional govcon model with commercial-grade technology that is ready day-one.”

Source: RevenueBase Database · checked Sep 28, 2026

Showing 25 of 31,585 IT consulting companies for government worldwide

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IT consulting companies for government worldwide at a glance

As of Sep 28, 2026
24.9%Verified-email coverage
31.3Average contacts per company
1-10Median size (employees)
1.2%Largest-city concentration · London
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
15,861
11-50
10,046
51-200
3,820
201-500
1,032
501-1,000
338
1,001-5,000
296
5,001-10,000
47
10001+
73

Email recency is reported on each country list linked below.

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 IT consulting companies for government, 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
Every country. Country and city lists for IT consulting companies for government are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “IT consulting companies for government”. 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 IT consulting companies for government), 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 IT consulting companies for government, 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, 246,470 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.

IT consulting companies for government by location

193 lists · largest first

Every IT consulting companies for government 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 IT consulting companies for government, 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 IT consulting companies for government are there worldwide?

RevenueBase identified 31,585 IT consulting companies for government 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?

DXC Technology, headquartered in Ashburn, tops this list with the largest team on record.

Which country has the most IT consulting companies for government?

The United States leads with 8,544 companies, followed by India (2,786) and France (1,108). Every IT consulting companies for government list by country and city is linked on this page.

Which city has the most IT consulting companies for government?

London leads with 381 headquartered companies, followed by Paris (303) and Washington (277).

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 246,470 verified decision-maker contacts tracked across these 31,585 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.