The 1986 Norwegian Football Cup was the 81st edition of the Norwegian annual knockout football tournament. The Cup was won by Tromsø after they beat Lillestrøm in the cup final with the score 4–1. This was Tromsø's first Norwegian Cup title.

The penalty shoot-outs, instead of replays in the second and third round were introduced because a strike by municipality stadium officials was postponed many first round matches.

First round

|colspan="3" style="background-color:#97DEFF"|28 May 1986

|colspan="3" style="background-color:#97DEFF"|3 June 1986

|colspan="3" style="background-color:#97DEFF"|9 June 1986

|colspan="3" style="background-color:#97DEFF"|10 June 1986

|colspan="3" style="background-color:#97DEFF"|11 June 1986

|colspan="3" style="background-color:#97DEFF"|12 June 1986

|colspan="3" style="background-color:#97DEFF"|Replay: 4 June 1986

|colspan="3" style="background-color:#97DEFF"|Replay: 11 June 1986

|colspan="3" style="background-color:#97DEFF"|Replay: 17 June 1986

|colspan="3" style="background-color:#97DEFF"|Replay: 18 June 1986

Second round

|colspan="3" style="background-color:#97DEFF"|16 June 1986

|colspan="3" style="background-color:#97DEFF"|18 June 1986

|colspan="3" style="background-color:#97DEFF"|23 June 1986

|colspan="3" style="background-color:#97DEFF"|24 June 1986

|colspan="3" style="background-color:#97DEFF"|25 June 1986

Third round

|colspan="3" style="background-color:#97DEFF"|1 July 1986

|colspan="3" style="background-color:#97DEFF"|2 July 1986

Fourth round

Quarter-finals

Semi-finals

Final

References http://www.rsssf.no