Company lists · Data refreshed September 2026

Top 25 Defense systems integrators worldwide

Name: Defense systems integrators worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 1, 2026 1,139 companies tracked

RevenueBase identified 1,139 defense systems integrators worldwide as of September 2026 and tracks 354,065 professional contacts across them, including 30,273 with verified work emails and 140,081 with mobile numbers. The United States is the largest market and Ankara the largest hub.

This list covers defense systems integrators 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 1, 2026. Country and city lists for defense systems integrators 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 RevenueBase Smart Search rating on every row Refreshed Sep 1, 2026 86% judged on-target in blind review

1,139Companies

354,065Contacts tracked

30,273Verified emails

140,081Mobile numbers

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

The 25 largest defense systems integrators worldwide

Ranked by team size

Top 25 of 1,139 defense systems integrators worldwide, ranked by team size, largest first. Data refreshed Sep 1, 2026. RevenueBase Smart Search rates how each company's information relates to defense systems integrators: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Northrop Grumman	Indirect evidence	San Diego, CA, US	10001+	75,000 contacts →
	Indirect evidence “We are a close-knit community of big thinkers collaborating to keep the world safe.” Source: RevenueBase Database · checked Sep 1, 2026
2	Raytheon	Partial evidence	Arlington, VA, US	10001+	42,746 contacts →
	Partial evidence “Raytheon, an RTX business, creates next-generation defense solutions that are smarter, faster and better than previously thought possible.” Source: RevenueBase Database · checked Sep 1, 2026
3	Booz Allen Hamilton	Indirect evidence	Mclean, VA, US	10001+	34,223 contacts →
	Indirect evidence “Whether at the border, up in space, or on the battlefield, we build the advanced technology that makes America stronger, faster, and safer.” Source: RevenueBase Database · checked Sep 1, 2026
4	L3harris Technologies	Partial evidence	Melbourne, FL, US	10001+	24,757 contacts →
	Partial evidence “L3Harris Technologies is the Trusted Disruptor in the defense industry.” Source: RevenueBase Database · checked Sep 1, 2026
5	BAE Systems, INC	Indirect evidence	Falls Church, VA, US	10001+	12,874 contacts →
	Indirect evidence “Improving the future and protecting lives is an ambitious mission, but it’s what we do.” Source: RevenueBase Database · checked Sep 1, 2026
6	Aselsan	Indirect evidence	Mehmet Akif Ersoy, TürkiyeHQ checked Sep 1, 2026	10001+	12,657 contacts →
	Indirect evidence “ASELSAN is a company of Turkish Armed Forces Foundation, established in 1975 in order to meet the communication needs of the Turkish Armed Forces by national means.” Source: RevenueBase Database · checked Sep 1, 2026
7	Harris Corporation	Indirect evidence	Colorado Springs, CO, US	10001+	6,276 contacts →
	Indirect evidence “At Harris, our shared set of values, skills and experience have shaped some of the most remarkable communications technologies and cutting-edge innovations in the world.” Source: RevenueBase Database · checked Sep 1, 2026
8	Leonardo DRS	Partial evidence	Arlington, VA, US	5,001-10,000	5,947 contacts →
	Partial evidence “Leonardo DRS Inc.(Nasdaq: DRS) is at the forefront of developing transformative defense technologies using its proven agility and delivering innovative solutions for U.S.” Source: RevenueBase Database · checked Sep 1, 2026
9	Convergint	Strong evidence	Hoffman Estates, IL, US	10001+	5,729 contacts →
	Strong evidence “Convergint is a global systems integrator focused on delivering results for our customers through unparalleled service excellence.” Source: RevenueBase Database · checked Sep 1, 2026
10	IAI	Strong evidence	Airport, IL	10001+	4,631 contacts →
	Strong evidence “Israel Aerospace Industries Ltd.(IAI) is Israel’s largest aerospace and defense company specializing in developing and manufacturing advanced, state-of-the-art systems for air…” Source: RevenueBase Database · checked Sep 1, 2026
11	Anduril Industries	Partial evidence	Seattle, WA, US	1,001-5,000	3,905 contacts →
	Partial evidence “Anduril is not a traditional defense contractor.” Source: RevenueBase Database · checked Sep 1, 2026
12	Havelsan	Indirect evidence	Ankara, TürkiyeHQ checked Sep 1, 2026	1,001-5,000	3,348 contacts →
	Indirect evidence “HAVELSAN, Türk Silahlı Kuvvetlerini Güçlendirme Vakfı'na bağlı, savunma ve bilişim sektörlerinde global çözümler sunan bir yazılım ve sistem entegratörü şirkettir.” Source: RevenueBase Database · checked Sep 1, 2026
13	Hensoldt	Partial evidence	Kiel, DE	5,001-10,000	2,547 contacts →
	Partial evidence “HENSOLDT is a leading company in the European defence industry with a global reach.” Source: RevenueBase Database · checked Sep 1, 2026
14	Kratos Defense And Security Solutions	Indirect evidence	Englewood, CO, US	1,001-5,000	2,533 contacts →
	Indirect evidence “At Kratos, we deliver affordable, disruptive technologies that enable real-world readiness for national security.” Source: RevenueBase Database · checked Sep 1, 2026
15	Mercury Systems	Strong evidence	Upper Saddle River, NJ, US	1,001-5,000	2,152 contacts →
	Strong evidence “Mercury Systems – Innovation that matters® Mercury Systems is a global leader in aerospace and defense electronics, providing breakthrough capabilities in signal and data…” Source: RevenueBase Database · checked Sep 1, 2026
16	Elbit Systems	Strong evidence	Haifa, IL	10001+	2,102 contacts →
	Strong evidence “Elbit Systems is a leading global defense technology company, delivering advanced solutions for a secure and safer world.” Source: RevenueBase Database · checked Sep 1, 2026
17	Scientific Research Corporation	Indirect evidence	South Atlanta, GA, US	1,001-5,000	1,914 contacts →
	Indirect evidence “Scientific Research Corporation is an advanced engineering company that was founded in 1988 to provide innovative solutions to the U.S.” Source: RevenueBase Database · checked Sep 1, 2026
18	Modern Technology Solutions, Inc. Mtsi	Indirect evidence	Las Vegas, NV, US	1,001-5,000	1,909 contacts →
	Indirect evidence “Modern Technology Solutions, Inc.(MTSI) is a 100% employee-owned engineering services and technology solutions company delivering first-choice capabilities to solve problems of…” Source: RevenueBase Database · checked Sep 1, 2026
19	AV	Partial evidence	Moorpark, CA, US	1,001-5,000	1,894 contacts →
	Partial evidence “At AV, we build shoulder-to-shoulder with our customers, delivering systems shaped by real-world missions, not theoretical requirements.” Source: RevenueBase Database · checked Sep 1, 2026
20	Rafael Advanced Defense Systems	Strong evidence	IL	5,001-10,000	1,768 contacts →
	Strong evidence “Rafael Advanced Defense Systems Ltd.” Source: RevenueBase Database · checked Sep 1, 2026
21	Communications & Power Industries CPI	Partial evidence	Irving, TX, US	1,001-5,000	1,569 contacts →
	Partial evidence “Communications & Power Industries (CPI) is a world leader in large aperture antennas, components and systems, manufacturing advanced high-power and high-frequency technologies and…” Source: RevenueBase Database · checked Sep 1, 2026
22	Thales Defense & Security, INC	Partial evidence	Clarksburg, MD, US	1,001-5,000	1,520 contacts →
	Partial evidence “Thales Defense & Security, Inc.(TDSI) Headquartered in Clarksburg, MD, Thales Defense & Security, Inc.(TDSI) is a U.S.” Source: RevenueBase Database · checked Sep 1, 2026
23	Leidos Australia	Partial evidence	Scoresby, AU	1,001-5,000	965 contacts →
	Partial evidence “Leidos is a Fortune 500® innovation company working to solve the world’s toughest challenges in government, intelligence, defence, aviation, border protection and health markets.” Source: RevenueBase Database · checked Sep 1, 2026
24	Cobham	Indirect evidence	Christchurch, GB	501-1,000	796 contacts →
	Indirect evidence “Cobham Ltd” Source: RevenueBase Database · checked Sep 1, 2026
25	Precise Systems, INC	Strong evidence	Oxnard, CA, US	1,001-5,000	735 contacts →
	Strong evidence “Precise Systems delivers integrated, mission-ready solutions that advance warfighter readiness and strengthen our nation’s most critical defense programs.” Source: RevenueBase Database · checked Sep 1, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: defense systems integrators. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names defense systems integrators.
Partial evidence: Its own public description names part of defense systems integrators, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name defense systems integrators. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 1,139 defense systems integrators worldwide

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 30,273 reachable decision-makers.

Free signup · no credit card

View the full list →

Defense systems integrators worldwide at a glance

As of Sep 1, 2026

8.6%Verified-email coverage

39.6%Mobile-number coverage

310.9Average contacts per company

11-50Median size (employees)

2.3%Largest-city concentration · Ankara

Sep 1, 2026Page data refreshed

Companies by employee count

1-10

341

11-50

408

51-200

212

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 defense systems integrators, 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: 11 countries, largest first: the United States, India, the United Kingdom, Türkiye, Italy, France, Israel, the United Arab Emirates, Australia, Germany and 1 more. Country and city lists for defense systems integrators are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “defense systems integrators”. 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 defense systems integrators), 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 defense systems integrators, 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, 30,273 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 between September 1, 2026 and September 14, 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.

Defense systems integrators by location

11 lists · largest first

Every Defense systems integrators list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 defense systems integrators, 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 defense systems integrators are there worldwide?

RevenueBase identified 1,139 defense systems integrators 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?

Northrop Grumman, headquartered in San Diego, tops this list with the largest team on record.

Which country has the most defense systems integrators?

The United States leads with 598 companies, followed by India (125) and the United Kingdom (80). Every defense systems integrators list by country and city is linked on this page.

Which city has the most defense systems integrators?

Ankara leads with 26 headquartered companies, followed by Bangalore (22) and London (18).

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 30,273 verified decision-maker contacts tracked across these 1,139 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled from the company graph between September 1, 2026 and September 14, 2026.

Ready to reach these companies? Verified emails and direct dials for all 1,139 defense systems integrators worldwide. Start with a free account, no credit card.

Download this list →

Related lists

Browse the directory

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.