The 1988–89 Norwegian 1. Divisjon season was the 50th season of ice hockey in Norway. Ten teams participated in the league, and Sparta Sarpsborg won the championship.
Regular season
edit| Club | GP | W | T | L | GF–GA | Pts | |
|---|---|---|---|---|---|---|---|
| 1. | Trondheim | 36 | 28 | 1 | 7 | 198:121 | 57 |
| 2. | Storhamar Ishockey | 36 | 22 | 1 | 13 | 180:153 | 45 |
| 3. | Stjernen | 36 | 21 | 2 | 13 | 182:154 | 44 |
| 4. | Sparta Sarpsborg | 36 | 21 | 2 | 13 | 159:135 | 44 |
| 5. | Vålerenga Ishockey | 36 | 18 | 3 | 15 | 164:160 | 39 |
| 6. | Frisk Asker | 36 | 15 | 3 | 18 | 165:171 | 33 |
| 7. | Viking IK | 36 | 14 | 2 | 20 | 142:168 | 30 |
| 8. | Furuset IF | 36 | 13 | 2 | 21 | 158:161 | 28 |
| 9. | Manglerud Star Ishockey | 36 | 11 | 5 | 20 | 158:183 | 27 |
| 10. | Hasle-Løren Idrettslag | 36 | 6 | 1 | 29 | 120:220 | 13 |
Playoffs
edit| Semi-finals | Final | |||||
| Trondheim | 2 | |||||
| Stjernen | 1 | |||||
| Trondheim | 1 | |||||
| Sparta Sarpsborg | 3 | |||||
| Storhamar Ishockey | 0 | |||||
| Sparta Sarpsborg | 2 | |||||
| Third place | ||||||
| Not played | ||||||