The 1987 Norwegian Football Cup was the 82nd edition of the Norwegian annual knockout football tournament. The Cup was won by Bryne after they beat Brann in the cup final with the score 1–0. This was Bryne's first Norwegian Cup title.
From this season, the penalty shoot-outs were replaced the replays in the first three rounds.
First round
Second round
| Team 1 | Score | Team 2 |
|---|---|---|
| 23 June 1987 | ||
| Bryne | 2–0 | Ålgård |
| Mjøndalen | 12–0 | Tjølling |
| 24 June 1987 | ||
| Bjørkelangen | 0–2 | Strømmen |
| Brann | 4–0 | Fyllingen |
| Charlottenlund | 1–2 | Namsos |
| Clausenengen | 0–1 | Sunndal |
| Djerv 1919 | 2–0 | Figgjo |
| Drøbak/Frogn | 2–2 (7–6 p) | Åssiden |
| Faaberg | 2–3 | Kapp |
| HamKam | 3–1 | Nybergsund |
| Jerv | 1–5 | Odd |
| Kolbotn | 1–2 (a.e.t.) | Raufoss |
| Kongsvinger | 3–0 | Bærum |
| Lillestrøm | 6–3 (a.e.t.) | Sandefjord BK |
| Mo | 1–6 (a.e.t.) | Bodø/Glimt |
| Molde | 11–0 | Langevåg |
| Moss | 4–0 | Sarpsborg |
| Orkanger | 1–3 | Strindheim |
| Pors | 1–0 | Start |
| Rosenborg | 4–0 | Oppdal |
| Råde | 3–2 (a.e.t.) | Frigg |
| Sogndal | 2–0 | Eid |
| Steinkjer | 4–0 | Freidig |
| Stord | 0–1 | Åsane |
| Tromsø | 5–0 | Kautokeino |
| Varegg | 1–2 (a.e.t.) | Randaberg |
| Vidar | 4–2 (a.e.t.) | Donn |
| Vålerengen | 0–2 | Kjelsås |
| Ørn-Horten | 1–2 (a.e.t.) | Fredrikstad |
| Aalesund | 4–1 | Hødd |
| 25 June 1987 | ||
| Grand Bodø | 1–0 | Andenes |
| Skarp | 1–1 (4–3 p) | Fauske/Sprint |
Third round
| Team 1 | Score | Team 2 |
|---|---|---|
| 7 July 1987 | ||
| Strømmen | 1–1 (4–2 p) | Pors |
| Kapp | 0–1 (a.e.t.) | HamKam |
| Fredrikstad | 2–1 | Kongsvinger |
| Djerv 1919 | 0–2 | Bryne |
| 8 July 1987 | ||
| Kjelsås | 2–1 | Drøbak/Frogn |
| Raufoss | 0–4 | Lillestrøm |
| Moss | 0–0 (4–5 p) | Råde |
| Sunndal | 2–0 | Molde |
| Randaberg | 0–1 | Brann |
| Strindheim | 4–1 | Steinkjer |
| Åsane | 0–2 | Vidar |
| Bodø/Glimt | 3–1 | Skarp |
| Tromsø | 2–0 | Grand |
| Namsos | 0–3 | Rosenborg |
| Odd | 0–1 | Mjøndalen |
| Aalesund | 2–0 | Sogndal |
Fourth round
| Brann | 2–1 (a.e.t.) | Strindheim |
|---|---|---|
Storskogen  10', 104' |
Stokke 1' |
| Bodø/Glimt | 5–3 | Kjelsås |
|---|---|---|
| Berg 49' Haldorsen 50', 81'Hansen 56'Solli 69' |
Pettersen 57', 70' Rønning 83' (pen.) |
| Lillestrøm | 0–1 | Tromsø |
|---|---|---|
| Espejord 53' |
| Fredrikstad | 1–2 | Aalesund |
|---|---|---|
| Thomassen 33' (pen.) |
Ytterland 8' Halkjelsvik 77' |
Replay
Quarter-finals
| HamKam | 5–2 | Bodø/Glimt |
|---|---|---|
| Fjørtoft 42' Skogheim 45', 74'Kollshaugen 48'Kristiansen 70' |
Hansen 12' Jakobsen 32' |
Replay
Second replay
Semi-finals
| Brann | 2–1 | HamKam |
|---|---|---|
| Johnsen 14' Wilborn 57' |
Kollshaugen 28' |
