| Norgesmesterskapet i fotball for menn 1978 | |
|---|---|
| Tournament details | |
| Country |  Norway |
| Teams | 128 (main competition) |
| Defending champions | Lillestrøm |
| Final positions | |
| Champions | Lillestrøm (2nd title) |
| Runner-up | Brann |
The 1978 Norwegian Football Cup was the 73rd edition of the Norwegian annual knockout football tournament. The Cup was won by Lillestrøm after beating Brann in the cup final with the score 2–1. This was Lillestrøm's second Norwegian Cup title.