HYLAS-4 is a telecommunications satellite owned and operated by Avanti Communications and manufactured by Orbital ATK (now Northrop Grumman Innovation Systems) that was launched by an Ariane 5 rocket on 5 April 2018.

[2] The satellite is built to provide high speed data transmission services to Africa, Latin America and Europe.

[5] It is based on Orbital ATK's Star-3 Bus, delivering 64 28 GHz fixed beams covering Africa and parts of Europe.

There are also four independent steerable beams that can serve Africa, South America and Europe.

The launch was originally planned in early 2017 but has been delayed to 21 March 2018, and then to 5 April 2018.