1978 Norwegian Second Division

The 1978 2. divisjon was a Norwegian second-tier football league season.

The league was contested by 30 teams, divided into a total of three groups; A and B (non-Northern Norwegian teams) and Group C, a district group which contained teams from Northern Norway. The winners of group A and B were promoted to the 1979 1. divisjon. The second placed teams in group A and B met the winner of group C in a qualification round where the winner was promoted to 1. divisjon. The bottom team in group A and B and the seven lowest ranked teams in group C were relegated to the 3. divisjon. The second last teams in group A and B met in a two-legged qualification round to avoid relegation.

Mjøndalen won group A with 29 points. Rosenborg won group B with 27 points. Both teams promoted to the 1979 1. divisjon. Tromsø won group C and qualified for and the promotion play-offs but was not promoted.

Results

 * Tromsø – HamKam 0–3
 * Fredrikstad – Tromsø 1–0
 * HamKam – Fredrikstad 1–1

Results

 * Os – Strømmen 2–1
 * Strømmen – Os 0–1

''Os won 3–1 on aggregate. Strømmen was relegated to 3. divisjon.''