Sky One was a British pay television channel operated and owned by Sky Group. Originally launched on 26 April 1982 as Satellite Television, it was Europe's first satellite and non-terrestrial channel. From 31 July 1989, it became Sky One and broadcast exclusively in the United Kingdom and Ireland as British Sky Broadcasting's flagship channel. It existed until 1 September 2021, when it closed down as part of a restructuring with its EPG position taken by Sky Showcase and much of its content library moved to Sky Max.

Satellite television is a service that delivers television programming to viewers by relaying it from a communications satellite orbiting the Earth directly to the viewer's location. The signals are received via an outdoor parabolic antenna commonly referred to as a satellite dish and a low-noise block downconverter.