The 1970 Norwegian Football Cup was the 65th edition of the Norwegian annual knockout football tournament. The Cup was won by Strømsgodset after beating Lyn in the cup final with the score 4–2. This was Strømsgodset's second Norwegian Cup title.

First round

Second round

Third round

Fourth round

Quarter-finals

Semi-finals

Replay

Final

Strømsgodset's winning squad: Inge Thun, Arild Mathisen, Jan Kristiansen, Tor Alsaker-Nøstdahl, Erik Eriksen, Odd Arild Amundsen, Egil Olsen, Bjørn Odmar Andersen, Steinar Pettersen, Thorodd Presberg, Ingar Pettersen; Ole Johnny Friise, Håvard Beckstrøm, Johnny Vidar Pedersen, Sverre Rørvik and Per Rune Wølner. Lyn's team: Svein Bjørn Olsen, Jan Rodvang, Helge Østvold, Tore Børrehaug, Knut Kolle, Arild Gulden, Andreas Morisbak, Ola Dybwad-Olsen, Sven Otto Birkeland, Trygve Christophersen and Jon Palmer Austnes.