| Competition: | 2. divisjon |
| Season: | 1977 |
| Winners: | Skeid (Group A) Lyn (Group B) Mo (Group C) |
| Promoted: | Skeid (Group A) Lyn (Group B) Steinkjer (Group B) |
| Relegated: | Ørn (Group A) Larvik Turn (Group A) Sarpsborg FK (Group B) Grue (Group B) Stein (Group C) Norild (Group C) |
| Prevseason: | 1976 |
| Nextseason: | 1978 |
The 1977 2. divisjon was a Norway's 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.[1] The winners of group A and B were promoted to the 1978 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 two teams inn all groups were relegated to the 3. divisjon.
Skeid won group A with 25 points. Lyn won group B with 25 points. Both teams promoted to the 1978 1. divisjon. Mo won group C and qualified for and the promotion play-offs but was not promoted.