The 1977 Norwegian Football Cup was won by Lillestrøm after beating Bodø/Glimt 1–0 in the final on 23 October 1977. This was the first time Lillestrøm won the Norwegian Cup.
In the final, Lillestrøm won 1–0 against Bodø/Glimt, with their biggest star, Tom Lund scoring the only goal. This was Lillestrøm's fourth final, and the first time they won the Norwegian Cup.