| Competition: | 1. divisjon |
| Season: | 1970 |
| Winners: | Strømsgodset 1st title |
| Relegated: | Skeid Pors |
| Continentalcup1: | European Cup |
| Continentalcup1 Qualifiers: | Strømsgodset |
| Continentalcup3: | UEFA Cup |
| Continentalcup3 Qualifiers: | Rosenborg |
| Matches: | 90 |
| Total Goals: | 210 |
| League Topscorer: | Steinar Pettersen (16 goals) |
| Biggest Home Win: | (3 May 1970) |
| Biggest Away Win: | (18 October 1970) |
| Highest Scoring: | (3 May 1970) |
| Longest Wins: | Brann (6 games) |
| Longest Unbeaten: | Brann (9 games) |
| Longest Winless: | Pors (9 games) |
| Longest Losses: | Pors (9 games) |
| Highest Attendance: | 15,200 (11 October 1970) |
| Lowest Attendance: | 1,000 (21 June 1970) |
| Average Attendance: | 5,636 25.7% |
| Dates: | 27 April – 18 October |
| Prevseason: | 1969 |
| Nextseason: | 1971 |
The 1970 1. divisjon was the 26th completed season of top division football in Norway.
It was contested by 10 teams, and Strømsgodset won the championship, their first league title.
Note: Table lists in alphabetical order.
| Team | Location | ||
|---|---|---|---|
| Brann | 18 | Bergen | |
| Fredrikstad | 25 | Fredrikstad | |
| HamKam | 2 | Hamar | |
| Hødd | 3 | Ulsteinvik | |
| Pors | 5 | Porsgrunn | |
| Rosenborg | 8 | Trondheim | |
| Sarpsborg FK | 20 | Sarpsborg | |
| Skeid | 24 | Oslo | |
| Strømsgodset | 5 | Drammen | |
| Viking | 23 | Stavanger |
Steinar Pettersen, Strømsgodset – 16 goals