The competition began on 12 September 2015 and ended on 12 June 2016.
[1] The defending champions from the previous season were Club Africain.
A total of 16 teams contested the league, including 13 sides from the 2014–15 season and three promoted from the 2014–15 Ligue 2.
Union de Ben Guerdane was the first to obtain promotion, followed by Avenir de Kasserine and finally Olympique Sidi Bouzid.
The three teams replaced Union Monastirienne, Avenir de Gabès and Association de Djerba who were relegated to 2015–16 Tunisian Ligue 2.