Inmarsat is a British satellite telecommunications company that provides global telephone and data services via portable or mobile terminals which communicate with ground stations through fourteen geostationary telecommunications satellites. 

Inmarsat was set up in 1979 by the International Maritime Organization (IMO) to develop a satellite communications network for protecting lives at sea. Today, Inmarsat provides connectivity infrastructure to the aviation, maritime, government, and enterprise markets, including the most remote and challenging locations.