| Competition: | 2. divisjon |
| Season: | 1986 |
| Winners: | Moss Brann |
| Promoted: | Moss Brann |
| Relegated: | Strømsgodset Jerv Bærum Steinkjer Grand Bodø Mo |
| Prevseason: | 1985 |
| Nextseason: | 1987 |
The 1986 2. divisjon was a Norway's second-tier football league season.
The league was contested by 24 teams, divided into two groups; A and B. The winners of group A and B were promoted to the 1987 1. divisjon.[1] The second placed teams met the 10th position finisher in the 1. divisjon in a qualification round where the winner was promoted to 1. divisjon. The bottom three teams inn both groups were relegated to the 3. divisjon.
Moss won group A with 35 points and Brann won group B with 35 points. Both teams promoted to the 1987 1. divisjon. The second-placed teams, Drøbak/Frogn and Vidar met Tromsø in the promotion play-offs. Tromsø won the qualification and remained in the 1. divisjon.
Tromsø won the qualification round and remained in the 1. divisjon.