Company lists · Data refreshed September 2026
Top 25 Space technology security companies worldwide
RevenueBase identified 531 space technology security companies worldwide as of September 2026 and tracks 70,149 professional contacts across them, including 3,303 with verified work emails. The United States is the largest market and London the largest hub.
This list covers space technology security companies 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 space technology security companies 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.
The 25 largest space technology security companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 15,727 contacts → | ||||
Strong evidence “With headquarters in New York City and approximately employees worldwide, L3 develops advanced defense technologies and commercial solutions in pilot training, aviation security…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 2,559 contacts → | ||||
Strong evidence “At Kratos, we deliver affordable, disruptive technologies that enable real-world readiness for national security.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,739 contacts → | ||||
Indirect evidence “Maxar Intelligence is a leading provider of secure, precise geospatial insights.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 1,459 contacts → | ||||
Partial evidence “Headquartered in Colorado, Sierra Space is a mission-proven Defense Tech company delivering satellite platforms, critical subsystems, reusable spaceplanes, hypersonic…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 1,373 contacts → | ||||
Partial evidence “KONGSBERG protects people and critical infrastructure – from deep sea to space.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 826 contacts → | ||||
Strong evidence “From missile warning to advanced national security space missions, Millennium rapidly delivers affordable prototype and constellation solutions across orbits.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 396 contacts → | ||||
Strong evidence “Voyager is a defense, national security and space technology company, pioneering transformative, mission-critical solutions that redefine possibilities for civil, commercial and…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 386 contacts → | ||||
Indirect evidence “At ERT, we have been providing high-value solutions and expertise to our partners at U.S.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 373 contacts → | ||||
Partial evidence “Space42 is redefining the boundaries of SpaceTech, combining satellite communications, geospatial analytics, and AI to deliver transformative solutions from space.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 368 contacts → | ||||
Indirect evidence “System High Corporation, a Veilant company, delivers the most advanced protection and secrecy solutions to secure and strengthen critical missions, programs, operations, and…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 320 contacts → | ||||
Strong evidence “We are a company of services and technological developments of high added value, specializing in space activities.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 313 contacts → | ||||
Partial evidence “Airbus US Space & Defense is a trusted U.S.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 312 contacts → | ||||
Partial evidence “Global solutions in space, warfighter support, and training and maritime operations.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 261 contacts → | ||||
Partial evidence “SITAEL is the largest privately-owned Space Company in Italy leading the development of the Small Satellites sector.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 256 contacts → | ||||
Strong evidence “True Anomaly is the only defense technology company focused exclusively on space defense.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 251 contacts → | ||||
Partial evidence “HEMERIA was founded with the idea that each nation should be able to access autonomous space and defense capabilities, for a safer, more sustainable and more equitable world.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 236 contacts → | ||||
Partial evidence “SES Space & Defense is a space solutions company equipping governments with integrated, purpose-built satellite and connectivity solutions that deliver resilient, future-proof…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 212 contacts → | ||||
Strong evidence “Umbra is an American space technology company built to push the limits of what’s possible.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 181 contacts → | ||||
Strong evidence “RHEA Group is a professional engineering and solutions company, offering engineering solutions, system development and security services for space, government, defence and other…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 175 contacts → | ||||
Partial evidence “Slingshot Aerospace is the leader in Space Operations Intelligence & Autonomy (SOIA), delivering AI-powered solutions that help government and commercial partners track…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 162 contacts → | ||||
Partial evidence “Turion Space is building the infrastructure to secure and sustain the future of space.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 160 contacts → | ||||
Strong evidence “Fleet Space Technologies, a leading Australian space company with a mission to connect Earth, Moon, and Mars, is revolutionising the mineral exploration, defence, and space…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 159 contacts → | ||||
Partial evidence “ISISPACE Group is a vertically integrated small satellite company, focused on providing high value, cost-effective space solutions by making use of the latest innovative…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 157 contacts → | ||||
Partial evidence “GalaxEye is Indian headquartered space tech startup and first Indian HQ startup to send the Satellite in the orbit soon.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 148 contacts → | ||||
Strong evidence “AAC Clyde Space provides small satellite technologies and services that help governments, businesses and institutions access high-quality data from space.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
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: space technology security companies. 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 space technology security companies.
- Partial evidence
- Its own public description names part of space technology security companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name space technology security companies. 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 531 space technology security companies worldwide
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Space technology security companies worldwide at a glance
As of Sep 29, 2026Companies by employee count
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 space technology security companies, 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 space technology security companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “space technology security companies”. 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 space technology security companies), 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 space technology security companies, 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, 3,303 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.
Space technology security companies by location
3 lists · largest firstEvery Space technology security companies 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 space technology security companies, 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 space technology security companies are there worldwide?
RevenueBase identified 531 space technology security companies 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?
L3 Technologies, headquartered in New York, tops this list with the largest team on record.
Which country has the most space technology security companies?
The United States leads with 142 companies, followed by India (35) and the United Kingdom (25). Every space technology security companies list by country and city is linked on this page.
Which city has the most space technology security companies?
London leads with 11 headquartered companies, followed by Colorado Springs (6) and Hyderabad (6).
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 3,303 verified decision-maker contacts tracked across these 531 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.