| Competition: | 2. divisjon |
| Season: | 1975 |
| Winners: | Bryne (Group A) HamKam (Group B) Norild (District XI) |
| Promoted: | Bryne (Group A) Vard (Group A) HamKam (Group B) |
| Relegated: | Sunndal (Group A) Florvåg (Group A) Østsiden (Group B) Lisleby (Group B) |
| Continentalcup1: | Cup Winners' Cup |
| Continentalcup1 Qualifiers: | Bodø/Glimt |
| Prevseason: | 1974 |
| Nextseason: | 1976 |
The 1975 2. divisjon was a Norway's second-tier football league season.
The league was contested by 36 teams, divided into a total of four groups; A and B (non-Northern Norwegian teams) and two district groups which contained teams from Northern Norway: district IX–X and district XI.[1] The winners of group A and B were promoted to the 1976 1. divisjon, while the winners of the district groups qualified for the Northern Norwegian final. The second placed teams in group A and B met the winner of the district IX–X in a qualification round where the winner was promoted to 1. divisjon. The winner of district XI was not eligible for promotion. The bottom two teams inn group A and B were relegated to the 3. divisjon. Due to restructuring of the second tier, three teams in district IX–X and 6 teams in district XI were relegated to the 1976 3. divisjon.
Bryne won group A with 32 points. HamKam won group B with 25 points. Both teams promoted to the 1976 1. divisjon. Vard finished second in group A won the qualification play-offs and was also promoted.
A Northern Norwegian Final was played between the winners of the two district groups, Bodø/Glimt and Norild.[1]