The 1989–90 Norwegian 1. Divisjon season was the 51st season of ice hockey in Norway. Ten teams participated in the league, and Furuset IF won the championship.
| Club | GP | W | T | L | GF–GA | Pts | ||
|---|---|---|---|---|---|---|---|---|
| 1. | 36 | 24 | 5 | 7 | 237:117 | 53 | ||
| 2. | 36 | 24 | 3 | 9 | 232:137 | 51 | ||
| 3. | 36 | 25 | 0 | 11 | 197:144 | 50 | ||
| 4. | 36 | 23 | 3 | 10 | 218:148 | 49 | ||
| 5. | 36 | 23 | 3 | 10 | 200:131 | 49 | ||
| 6. | 36 | 15 | 4 | 17 | 165:145 | 34 | ||
| 7. | 36 | 12 | 3 | 21 | 157:210 | 27 | ||
| 8. | 36 | 11 | 3 | 22 | 152:172 | 25 | ||
| 9. | 36 | 8 | 4 | 24 | 146:201 | 20 | ||
| 10. | 36 | 1 | 0 | 35 | 64:363 | 2 |