挪威丙级联赛 - 12 组

1963–2010

The 3. divisjon was known as the 4. divisjon from 1963 until 1990, when the top-tier league changed its name to Tippeligaen, the 2. divisjon became the 1. divisjon and the names of all the lower divisions were adjusted accordingly. Until 2010, there were 24 parallel sections of the 3. divisjon, each consisting of between 10 and 16 teams. The winners paired up and played each other in one home match and one away match in a playoff. Thus, 12 teams were promoted to the 2. divisjon. This system was in place from 2001. The number of teams that were relegated from each section to the 4. divisjon, varied from two to four, depending on the number of teams in each section.

2011–2016

From 2011 to 2016, 3. divisjon consisted of 12 parallel sections of 12 or 14 teams, and the winners of each group was promoted to the 2. divisjon. Ten sections consisted of 14 teams each, from the South of Norway, the last two sections consisted of 12 teams each, from the Northern Norway. In the sections with 14 teams, the bottom three teams were relegated to the 4. divisjon, and in the two sections with 12 teams each, the bottom two teams were relegated.

2017–

After changes in the Norwegian football pyramid, no teams were promoted from the 3. divisjon after the 2016 season. The fourth tier was split into six groups which for the 2017 season consisted of the teams finishing from 7th to 14th in the 2016 2. divisjon groups and the top 4 teams from the 3. divisjon groups along with the 8th best 5th placed teams in the 3. divisjon. The rest of the teams in the 2016 3. divisjon was relegated. As of the 2018 season, the 3. divisjon consist of 6 groups of 14 teams.

Like in the rest of the Norwegian Football league system, all the teams play each other twice, once at home and once away. Three points are awarded for a win, one for a draw, and if two teams are equal on points, the one with the best goal difference is above the other on the table. The teams are placed in the 12 sections according to geographic considerations.