Top ISRU Companies

Technology 5

A curated ranking of 5 companies in the space economy that work with ISRU. Listings are ordered by featured tier, then disclosed employee headcount, then name. Last reviewed: 2026.

See also: all ISRU companies

TOP SECTORS

Space Resources & Mining 3 Planetary Exploration 3 Lunar Services 3 Space Transportation & Logistics 3 Space Domain Awareness 1

HEADQUARTERS

United States 4 Japan 1

RANKED LIST · 5 COMPANIES

1

ispace

OPERATING

JPN EST. 2010 $TSE:9348

Designs and operates lunar landers and rovers, providing payload delivery, surface exploration, and data services to build cislunar infrastructure

Space Transportation & LogisticsLunar ServicesPlanetary Exploration
Tokyo, Japan

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2

Lunar Outpost

OPERATING

USA EST. 2017

Builds lunar rovers and robotic infrastructure for surface mobility, prospecting, and crew transport on the Moon and Mars

Lunar ServicesPlanetary ExplorationSpace Resources & Mining
Golden, Colorado

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3

AstroForge

OPERATING

USA EST. 2022

Develops spacecraft and in-situ refining technology to extract and process platinum group metals from metallic near-Earth asteroids

Planetary ExplorationSpace Resources & Mining
Seal Beach, California

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4

TransAstra

OPERATING

USA EST. 2017

Develops orbital logistics vehicles, asteroid capture systems, and space domain awareness telescopes for cislunar resource utilization

Space Transportation & LogisticsSpace Domain AwarenessSpace Resources & Mining
Los Angeles, California

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5

Eta Space

OPERATING

USA EST. 2019

Develops cryogenic propellant management systems for in-space storage, transfer, and refueling, and liquid hydrogen infrastructure for terrestrial energy applications

Space Transportation & LogisticsLunar ServicesSpace Propulsion
Rockledge, Florida

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FREQUENTLY ASKED

What companies are on the Top ISRU Companies list?

The Top ISRU Companies list ranks 5 space companies tagged with ISRU, prioritized by featured tier and headcount.

Which sectors do these companies operate in?

Companies on this list operate primarily in Space Resources & Mining (3), Planetary Exploration (3), and Lunar Services (3).

Where are these companies headquartered?

Most companies on this list are headquartered in United States (4) and Japan (1).

How is this list curated?

Companies appear on Space Index when our editors identify them as actively doing business in the space economy. Lists are ordered by featured tier, then by disclosed headcount, then alphabetically.