Tassili Airlines is an Algerian passenger airline, based in Algiers, owned by Sonatrach, the national state-owned oil company of Algeria.

Sonatrach is the national state-owned oil company of Algeria. Founded in 1963, it is known today to be the largest company in Africa with 154 subsidiaries, and often referred as the first African oil "major". In 2021, Sonatrach was the seventh largest gas company in the world.