The championship was contested by 16 teams, and Győri-ETO won the title under headcoach Attila Pintér, for the fourth time in their history.
Although the team from Rába-coast lost their first game 4-1 at the home of defending champions Debreceni VSC, Győr then went on an 18-game undefeated streak, winning 13 of those encounters.
Zalaegerszegi TE and Vasas SC finished the 2011–12 season in the last two places and thus were relegated to their respective NB II divisions.
MTK made their immediate comeback to the league, while Eger returned to the competition for the first time since the 1986–87 season.
[3][4] Following is the list of clubs competing in 2012–13 Nemzeti Bajnokság I, with their manager, captain, kit manufacturer and shirt sponsor.