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Top Orbital Refueling Companies

Technology 6

A curated ranking of 6 companies in the space economy that work with Orbital Refueling. Listings are ordered by featured tier, then disclosed employee headcount, then name. Last reviewed: 2026.

See also: all Orbital Refueling companies

TOP SECTORS
Space Transportation & Logistics 5 In-Orbit Servicing & Assembly 3 Space Propulsion 3 Space Domain Awareness 1 Satellite Components & Subsystems 1
HEADQUARTERS
United States 4 Japan 1 New Zealand 1
RANKED LIST · 6 COMPANIES
  1. 1
    Astroscale logo
    Astroscale
    OPERATING
    JPN EST. 2013 $186A

    Designs and operates spacecraft for on-orbit servicing, including debris removal, satellite life extension, and refueling across LEO and GEO

    Space Sustainability & Debris RemovalIn-Orbit Servicing & AssemblySpace Domain Awareness
    Sumida, Tokyo, Japan
    EXPLORE
  2. 2
    Dawn Aerospace logo
    Dawn Aerospace
    OPERATING
    NZL EST. 2017

    Manufactures non-toxic green propulsion systems for satellites and operates reusable suborbital spaceplanes for research and high-speed flight.

    Space Transportation & LogisticsSpace PropulsionSuborbital & High-Altitude
    Christchurch, New Zealand
    EXPLORE
  3. 3
    Orbit Fab logo
    Orbit Fab
    OPERATING
    USA EST. 2018

    Develops on-orbit refueling infrastructure and operates fuel depots, shuttles, and standardized docking interfaces for satellite propellant delivery in Earth orbit.

    Space Transportation & LogisticsSatellite Components & SubsystemsIn-Orbit Servicing & Assembly
    Lafayette, Colorado
    EXPLORE
  4. 4
    Portal Space Systems logo
    Portal Space Systems
    OPERATING
    USA EST. 2021

    Manufactures solar-thermal-propelled spacecraft buses for high-delta-v, multi-orbit maneuverability and tactically responsive space operations.

    Satellite ManufacturingSpace Transportation & LogisticsSpace Propulsion
    Bothell, Washington, USA
    EXPLORE
  5. 5
    Eta Space logo
    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, USA
    EXPLORE
  6. 6
    Atomos Space logo
    Atomos Space
    OPERATING
    USA EST. 2018

    Develops orbital transfer vehicles for in-space transportation, satellite life extension, and payload delivery services

    Space Transportation & LogisticsIn-Orbit Servicing & Assembly
    Broomfield, Colorado, USA
    EXPLORE
FREQUENTLY ASKED

What companies are on the Top Orbital Refueling Companies list?

The Top Orbital Refueling Companies list ranks 6 space companies tagged with Orbital Refueling, prioritized by featured tier and headcount.

Which sectors do these companies operate in?

Companies on this list operate primarily in Space Transportation & Logistics (5), In-Orbit Servicing & Assembly (3), and Space Propulsion (3).

Where are these companies headquartered?

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