Company lists · Data refreshed September 2026

Top 25 Public sector IT consulting firms worldwide

RevenueBase identified 35,751 public sector IT consulting firms worldwide as of September 2026 and tracks 1,185,730 professional contacts across them, including 302,356 with verified work emails. The United States is the largest market and London the largest hub.

This list covers public sector IT consulting firms 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 29, 2026. Country and city lists for public sector IT consulting firms 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 29, 2026 86% judged on-target in blind review
35,751Companies
1,185,730Contacts tracked
302,356Verified emails
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The 25 largest public sector IT consulting firms worldwide

Ranked by team size
Top 25 of 35,751 public sector IT consulting firms worldwide, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to public sector IT 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
1Partial evidenceAshburn, VA, United StatesHQ checked Sep 29, 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 29, 2026
2Partial evidenceTokyo, JapanHQ checked Sep 29, 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 29, 2026
3Indirect evidenceVancouver, BC, CanadaHQ checked Sep 29, 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 29, 2026
4Partial evidenceParis, FranceHQ checked Sep 29, 202610001+36,960 contacts →

Partial evidence

“Sopra Steria, a major Tech player in Europe with employees in nearly 30 countries, is recognised for its consulting, digital services and solutions.”

Source: RevenueBase Database · checked Sep 29, 2026
5Indirect evidenceReston, VA, United StatesHQ checked Sep 29, 202610001+27,416 contacts →

Indirect 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 29, 2026
6Indirect evidenceFalls Church, VA, United StatesHQ checked Sep 29, 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 29, 2026
7Strong evidenceAlcobendas, SpainHQ checked Sep 29, 202610001+15,041 contacts →

Strong evidence

“We are one of the world's leading consultancies in technological services for companies and the public sector.”

Source: RevenueBase Database · checked Sep 29, 2026
8Partial evidenceMclean, VA, United StatesHQ checked Sep 29, 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 29, 2026
9Indirect evidenceMandaluyong, PhilippinesHQ checked Sep 29, 202610001+11,174 contacts →

Indirect 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 29, 2026
10Indirect evidenceFrankfurt Am Main, GermanyHQ checked Sep 29, 202610001+10,154 contacts →

Indirect evidence

“Your digitalization partner with industry expertise With locations in more than 26 countries and over employees (2024), T-Systems is one of the leading providers of digital…”

Source: RevenueBase Database · checked Sep 29, 2026
11Indirect evidenceHerndon, VA, United StatesHQ checked Sep 29, 20265,001-10,0009,697 contacts →

Indirect evidence

“MANTECH is more than a technology company.”

Source: RevenueBase Database · checked Sep 29, 2026
12Indirect evidenceLondon, United KingdomHQ checked Sep 29, 202610001+9,653 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 29, 2026
13Indirect evidenceArlington, VA, United StatesHQ checked Sep 29, 202610001+9,125 contacts →

Indirect 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 29, 2026
14Partial evidenceLahore, PakistanHQ checked Sep 29, 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 29, 2026
15Strong evidenceRiyadh, Saudi ArabiaHQ checked Sep 29, 20261,001-5,0006,982 contacts →

Strong 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 29, 2026
16Indirect evidenceBarcelona, SpainHQ checked Sep 29, 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 29, 2026
17Indirect evidenceAuckland, New ZealandHQ checked Sep 29, 20265,001-10,0005,958 contacts →

Indirect evidence

“Customer focused values.”

Source: RevenueBase Database · checked Sep 29, 2026
18Partial evidenceSpainHQ checked Sep 29, 20265,001-10,0005,714 contacts →

Partial evidence

“Tragsatec, founded in 1989, is one of the enterprises that form Tragsa Group, a holding of public companies member of the State Industrial Ownership Corporation (SEPI).”

Source: RevenueBase Database · checked Sep 29, 2026
19Indirect evidenceRio De Janeiro, BrazilHQ checked Sep 29, 20265,001-10,0005,546 contacts →

Indirect evidence

“Somos uma empresa do Grupo América Móvil com mais de 30 anos de experiência na indústria de Tecnologia da Informação e Transformação Digital, contamos com mais de especialistas em…”

Source: RevenueBase Database · checked Sep 29, 2026
20Partial evidenceWarszawa, PolandHQ checked Sep 29, 20265,001-10,0005,519 contacts →

Partial evidence

“With over 7 500 Power People, Sii is Poland’s #1 partner for technology consulting, AI-driven digital transformation, engineering, and business services, empowering companies to…”

Source: RevenueBase Database · checked Sep 29, 2026
21Partial evidenceBirmingham, FranceHQ checked Sep 29, 20265,001-10,0005,460 contacts →

Partial evidence

“SCC unleashes the potential of IT for global businesses, as one of Europe’s largest independent IT groups.”

Source: RevenueBase Database · checked Sep 29, 2026
22Indirect evidenceParis, FranceHQ checked Sep 29, 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 29, 2026
23Indirect evidenceHasselt, BelgiumHQ checked Sep 29, 20265,001-10,0004,551 contacts →

Indirect evidence

“The digital world moves fast.”

Source: RevenueBase Database · checked Sep 29, 2026
24Indirect evidenceReston, VA, United StatesHQ checked Sep 29, 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 29, 2026
25Partial evidenceMadrid, SpainHQ checked Sep 29, 20261,001-5,0004,468 contacts →

Partial evidence

“Management Solutions is a leading provider of business consulting services for regulated industries.”

Source: RevenueBase Database · checked Sep 29, 2026

Showing 25 of 35,751 public sector IT consulting firms worldwide

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 302,356 reachable decision-makers.

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Public sector IT consulting firms worldwide at a glance

As of Sep 29, 2026
25.5%Verified-email coverage
33.2Average contacts per company
11-50Median size (employees)
1.5%Largest-city concentration · London
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
17,720
11-50
11,527
51-200
4,350
201-500
1,174
501-1,000
387
1,001-5,000
370
5,001-10,000
57
10001+
97

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 public sector IT 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.
Coverage
Every country. Country and city lists for public sector IT consulting firms are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “public sector IT 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 public sector IT 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 public sector IT consulting firms, 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, 302,356 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 29, 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.

Public sector IT consulting firms by location

217 lists · largest first

Every Public sector IT 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 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 public sector IT 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 public sector IT consulting firms are there worldwide?

RevenueBase identified 35,751 public sector IT consulting firms 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 public sector IT consulting firms?

The United States leads with 7,634 companies, followed by India (3,312) and France (1,675). Every public sector IT consulting firms list by country and city is linked on this page.

Which city has the most public sector IT consulting firms?

London leads with 543 headquartered companies, followed by Paris (516) and Sao Paulo (328).

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 302,356 verified decision-maker contacts tracked across these 35,751 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 29, 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.