Subsidiary of Viasat (acquired 2023)Founded 1979 · London, EnglandUpdated Aug 31, 2026

Inmarsat

Satellite operator providing global mobile satellite communications via L-band and Ka-band networks.

British satellite telecommunications company operating a global fleet of geostationary satellites to provide mobile voice and data services for maritime, aviation, government, and enterprise users.

Suppliers, customers & partners

Suppliers & service providers to Inmarsat

SWISSto12— customer / program customerTell me more

SWISSto12 supplies satellites and RF systems and is named as a supplier to customers including Inmarsat (Inmarsat is cited as a buyer of SWISSto12 RF/satellite products).

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Inmarsat customers & supported companies

Addvalue Technologies Ltd— supplierTell me more

Inmarsat provides the global geostationary network and distribution capability that enables Addvalue's IDRS (Inter-satellite Data Relay System) service and partnerships (Addvalue and third parties leverage Inmarsat's network capacity and distribution to deliver real‑time LEO relay services).

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Microsoft— supplierTell me more

Inmarsat supplies satellite connectivity services as an early ExpressRoute partner for Azure (since 2019).

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Marlink— supplierTell me more

Inmarsat is a main supplier of satellite capacity to Marlink for hybrid network services (status as of 2022; Inmarsat later acquired by Viasat).

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Inmarsat program partners

Satcom Direct— supplier / network partnerTell me more

Inmarsat provides satellite connectivity services (e.g., Jet ConneX and SwiftBroadband) that Satcom Direct integrates and resells as part of SD’s cabin and flight‑deck connectivity offerings (SD FlightDeck Freedom and cabin Wi‑Fi solutions) in commercial business aviation arrangements such as the Luxaviation agreement.

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Panasonic Avionics Corporation— strategic partner / supplierTell me more

Inmarsat provides satellite communications network capacity and GX Aviation services that enable Panasonic Avionics to deliver in‑flight connectivity; the firms announced a landmark strategic collaboration for commercial aviation (Panasonic to continue offering its Ku‑band services while partnering with Inmarsat on GX Aviation integration).

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AST Networks— network supplier / partnerTell me more

Inmarsat is listed by AST Networks among the supported constellation/network providers (GEO/MSS) that AST integrates into its maritime and remote communications solutions.

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Eutelsat OneWeb— customer / program partnerTell me more

Eutelsat OneWeb's LEO network is contracted to support Inmarsat maritime connectivity services — OneWeb supplies LEO capacity/capability to support Inmarsat's maritime service offerings (announced as part of Eutelsat/OneWeb program cooperation).

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Goonhilly Earth Station— technology partner / program supportTell me more

Inmarsat supported a UK satellite navigation system project that referenced Goonhilly's role; the reported collaboration indicates Inmarsat providing satellite communications support related to projects involving Goonhilly's ground-station capabilities.

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Internalized capabilities

Viasat— acquired capability3 connectionsTell me more

Viasat completed the acquisition of Inmarsat (business combination) and thereby supplies corporate ownership, capital and integrated organisational capabilities to Inmarsat; transaction closed 2023-05-31.

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Viasat acquired Inmarsat as an integrated capability enabling expanded global mobile satellite services and government/commercial service offerings; Inmarsat became part of Viasat's overall communications business (acquisition announced/closed in 2023 as reported by company histories).

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Viasat acquired Inmarsat in May 2023, integrating its fleet of 14 GEO satellites (L-, Ka-, and S-band), spectrum assets, and mobile satellite communications capabilities.

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Explore Inmarsat in context

← Suppliers to Inmarsat3 companies · Browse profiles

Eutelsat OneWeb SWISSto12 Telespazio

Companies supplied by Inmarsat →8 companies · Browse profiles

Addvalue Technologies Ltd AST Networks Capella Space Goonhilly Earth Station Marlink Microsoft Panasonic Avionics Corporation Satcom Direct

↔ Both directions1 companies · Browse profiles

Viasat

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