2015 Norwegian Second Division

The 2015 2. divisjon (often referred to as Oddsen-ligaen for sponsorship reasons) was a Norwegian football third-tier league. The league consisted of 56 teams divided into 4 groups of 14 teams. The winners of the four groups were promoted to the 1. divisjon, while the bottom three teams in each groups were relegated to the 3. divisjon.

The league was played as a double round-robin tournament, where all teams played 26 matches.