Largest Space Companies
215Space industry companies ranked by disclosed employee headcount. Companies that haven't published headcount are excluded; for funded-only ranking, see /companies/funded.
| Company ↑ | HQ | Status | Tags | |
|---|---|---|---|---|
| San Francisco, California | OPERATING | → | ||
| Rockledge, Florida | OPERATING | → | ||
| London, United Kingdom | OPERATING | → | ||
| Tysons, Virginia | OPERATING | → | ||
| Didcot, United Kingdom | OPERATING | → | ||
| Vancouver, California | OPERATING | → | ||
| Nottingham, United Kingdom | OPERATING | → | ||
| Luxembourg City, Luxembourg | OPERATING | → | ||
| Santa Fe, New Mexico | OPERATING | → | ||
| London, Florida | OPERATING | → | ||
| Hawthorne, California | CLOSED | → | ||
| Somerville, Massachusetts | OPERATING | → | ||
| Denver, Colorado | OPERATING | → | ||
| Broomfield, Colorado | OPERATING | → | ||
| Milan, Italy | OPERATING | → |
Builds a decentralized edge computing platform that interconnects satellites for on-orbit AI processing, data optimization, and compute marketplace services
Develops cryogenic propellant management systems for in-space storage, transfer, and refueling, and liquid hydrogen infrastructure for terrestrial energy applications
Develops a network of space-based acoustic sensors designed to detect and characterize sub-centimeter orbital debris for satellite operators and insurers
Operates non-geostationary satellite infrastructure to deliver hybrid 5G direct-to-device mobile connectivity using globally harmonized S-band spectrum
Develops space-based solar power technology to beam continuous clean energy from geostationary orbit to Earth via wireless power transmission
Operates a constellation of nano-satellites providing secure data relay, storage, and computation as a service for satellite operators
Develops autonomous miniaturized laboratories and bioreactor platforms for pharmaceutical research and biomanufacturing in microgravity
Builds proprietary orbital sensors and a SaaS platform for real-time space weather monitoring, forecasting, and risk mitigation
Provides commercial Wi-Fi access points, space communicators, and persistent connectivity services for spacecraft, space stations, and lunar missions
Develops reusable spacecraft through on-orbit assembly and reprovisioning, extending operations and cutting lifecycle costs by 80%
Developed electrodeless radio-frequency and multi-mode electric propulsion systems for satellites
Develops deployable mesh reflector antennas and adaptive radar systems for satellite communications and RF situational awareness in GEO and higher orbits
Provides suborbital launch services and hypersonic flight testing from Spaceport America using reusable sounding rockets
Develops orbital transfer vehicles for in-space transportation, satellite life extension, and payload delivery services
Develops optical multiplexing receivers for satellite free-space communication using orbital angular momentum of light