The 1991 Norwegian Football Cup was the 86th edition of the Norwegian Football Cup. The final took place at Ullevaal Stadion in Oslo on 20 October 1991. Strømsgodset were won the Norwegian Cup after they defeated Rosenborg with the score 3âÂÂ2. This was Strømsgodset's fourth Norwegian Cup title.
Below are the dates for each round as given by the official schedule:
|colspan="3" style="background-color:#97DEFF"|29 May 1991
|- |colspan="3" style="background-color:#97DEFF"|30 May 1991
|- |colspan="3" style="background-color:#97DEFF"|2 June 1991
|- |colspan="3" style="background-color:#97DEFF"|3 June 1991
|colspan="3" style="background-color:#97DEFF"|11 June 1991
|- |colspan="3" style="background-color:#97DEFF"|12 June 1991
|colspan="3" style="background-color:#97DEFF"|25 June 1991
|- |colspan="3" style="background-color:#97DEFF"|26 June 1991
|- |colspan="3" style="background-color:#97DEFF"|27 June 1991