II liga (Druga liga, Polish pronunciation: [ˈdruɡa ˈliɡa]), currently named Betclic II liga due to its sponsorship by Betclic,[1] is a Polish football league that sits at the third tier of the Polish football league system.

In 1927, the Ekstraklasa, also called State League (Liga Panstwowa) was established.

Below the Ekstraklasa, there were several regional A Classes, which in most cases covered the territory of one Voivodeship (see Lower Level Football Leagues in Interwar Poland).

On 29 June 1945 in Kraków, officials of the Polish Football Association (PZPN) established three-tier system of regional championships in Poland.

26 February 1966, PZPN decided to reduce the number of groups to 4, with 16 teams in each.