The 2012–13 Danish 1st Division season was the 17th season of the Danish 1st Division league championship, governed by the Danish Football Association. This was the first season with a twelve-club First Division.
FC Fyn won the promotion game from the 2011–12 Danish 2nd Divisions against HIK and were promoted to the division. It replaced FC Roskilde, Næstved Boldklub and Blokhus FC, who were relegated after the 2011–12 season as the number of teams in the division was reduced from 14 to 12. But FC Fyn went bankrupt on 1 February 2013. Immediately they were docked 3 points for going into administration and later they withdrew from the tournament during the winter break, and were treated as losing all of their Spring games 3-0.[1]
On 28 September 2012, Akademisk Boldklub (AB) changed its name to Akademisk Boldklub Gladsaxe (AB Gladsaxe) after Gladsaxe Municipality became a sponsor and partner.[2]
Source: Danish Football Association Rules for classification: 1) points; 2) goal difference; 3) number of goals scored. (C) Champions; (P) Promoted; (R) Relegated Notes:
^On 5 May 2013 FC Hjørring was denied licence renewal because the club failed to meet the economic requirements. The Danish FA decided that the club would be relegated to second division at the end of the season. The decision was appealed by the club and since the club was able to raise the necessary money, the decision was reversed and the club was allowed to stay in the league.
^On 30 April Brønshøj was docked six point due to irregularities with player contracts.
^On 1 February 2013 FC Fyn went bankrupt. They were docked three points for going into administration and later the team dissolved itself and withdrew from the tournament. With that they lost their remaining matches 3-0. The licence was relegated to Funen Series and used by Boldklubben 1913 in the following season.