Ligue Professionnelle 1 is the top professional football league in Algeria. Established in 1962, it features 16 teams competing annually for the championship title. The league operates on a system of promotion and relegation with Ligue 2, the second tier of Algerian football. The season typically runs from August to May, with each team playing 30 matches. The team with the most points at the end of the season is crowned the champion. CR Belouizdad and JS Kabylie are among the most successful clubs in the league's history, contributing to its rich football culture.