All Industries

Top Space Tech Companies

385 Space Tech companies, sorted by total funding raised.

Spaceium Inc

In-Space Refueling

Los Angeles, United States1–10Space Tech, Robotics
Seed·$6.3M·Jan 2025
Esper Satellite Imagery

Builder and operator of remote sensing satellites capable of high-resolution hyperspectral imagery.

Patterson Lakes, Australia1–10Space Tech
Venture Unknown·$6.2M·Mar 2026
Icarus Robotics

Icarus Robotics builds robotics systems for Low Earth Orbit, working to industrialize space in th...

1–10Space Tech
Seed·$6.1M·Sep 2025
Revolv Space

We revolutionize satellite operations, making them truly continuous, by providing satellite manuf...

Turin, Netherlands11–50Defense Tech, Space Tech
Seed·$6.1M·May 2024
RS
Revolution Space

Advanced space systems company developing lightweight ion beam propulsion technology for satellit...

Boston, United States51–200Defense Tech, Space Tech
Seed·$5.7M
Aptos Orbital

Cryptosat is to build satellites that power cryptographic, blockchain and ledger applications.

Mountain View, United States1–10Space Tech, Artificial Intelligence
Venture Unknown·$5.6M·Sep 2024
Cislunar Industries

& over $175K raised for . Providing power in Space for every imaginable use case: propulsion, mat...

Loveland, United States1–10Advanced Materials, Space Tech
Seed·$5.6M·Mar 2026
EraDrive

Autonomous spacecraft technology company providing AI-powered hardware-software kits for satellit...

Palo Alto, United States1–10Autonomous Vehicles, Space Tech
Seed·$5.3M·Dec 2025
Orbio Earth

Tracking methane emissions with satellites

11–50Space Tech, Climate Tech
Seed·$4.6M·Mar 2024
Xovian Aerospace

Indian spacetech startup building satellite and launch systems.

Bengaluru, India1–10Aerospace, Space Tech
Seed·$4.5M·Apr 2026
Radical

High-altitude solar-powered aircraft

Seattle, United States1–10Space Tech, Industrials
Seed·$4.5M·Feb 2023
SIVANANTHAN LABORATORIES, INC.

R&D company with 41 SBIR/STTR awards from Department of Defense, Department of Energy, National A...

BOLINGBROOK, United States11–50Defense Tech, Space Tech
Grant·$4.2M
OhmSpace

Our mission is to revolutionize the space industry by providing a breakthrough in satellite propu...

Rome, United Kingdom11–50Defense Tech, Satellite Propulsion
Seed·$4.1M·Nov 2025
Prewitt Ridge

Engineering collaboration software for teams building challenging deep tech projects.

Los Angeles, United States1–10Space Tech, Defense Tech
Seed·$4.1M·Sep 2023
BRIGHT SILICON TECHNOLOGIES, INC.

R&D company with 5 SBIR/STTR awards from Department of Defense.

Livermore, United States1–10Defense Tech, Space Tech
Series A·$4.0M·Mar 2026
DIGITAL OPTICS TECHNOLOGIES INC

R&D company with 25 SBIR/STTR awards from Department of Defense, National Aeronautics and Space A...

ROLLING MEADOWS, United States1–10Defense Tech, Space Tech
Grant·$3.7M
K
Kayhan

Kayhan Space provides autonomous satellite operations and spaceflight safety software, with AI-po...

United StatesSpace Tech
Seed·$3.7M·Jan 2021
Spiral Blue

Developing a SmallSat constellation with LiDAR-optical multisensor technology

Eveleigh, AustraliaSpace Tech, Climate Tech
Grant·$3.2M·Sep 2025
Pulse Space

Pulse is developing scalable on-demand power and space situational awareness services (ssa) in or...

Bellevue, United StatesSpace Tech
Seed·$3.2M·Mar 2025
APPLIED NANOFEMTO TECHNOLOGIES LLC

R&D company with 11 SBIR/STTR awards from Department of Defense, National Aeronautics and Space A...

LOWELL, United States1–10Deep Tech, Defense Tech
Grant·$3.2M·Feb 2022
IS
INTERNATIONAL SCIENTIFIC TECHNOLOGIES INC

R&D company with 8 SBIR/STTR awards from National Aeronautics and Space Administration, Departmen...

RADFORD, United States1–10Defense Tech, Space Tech
Funding undisclosed
X-lumin

R&D company with 2 SBIR/STTR awards from Department of Defense.

Merritt Island, United States1–10Defense Tech, Space Tech
Funding undisclosed
HQPHOTONICS INC.

R&D company with 2 SBIR/STTR awards from Department of Defense.

Pasadena, United States1–10Defense Tech, Space Tech
Funding undisclosed
ALBIREO TECHNOLOGIES LLC

R&D company with 6 SBIR/STTR awards from Department of Defense, National Aeronautics and Space Ad...

PORTER RANCH, United States1–10Defense Tech, Space Tech
Funding undisclosed
Echelon Orbital Inc.

R&D company with 3 SBIR/STTR awards from Department of Defense.

SCOTTSDALE, United States1–10Defense Tech, Space Tech
Funding undisclosed