The 1980 Norwegian Football Cup was the 75th edition of the Norwegian annual knockout football tournament. The Cup was won by Vålerengen after beating Lillestrøm in the cup final with the score 4–1. This was Vålerengen's first Norwegian Cup title.
First round
Second round
| Team 1 | Score | Team 2 |
|---|---|---|
| 17 June 1980 | ||
| Eik | 1–1 (a.e.t.) | Odd |
| Vard | 2–1 | Kopervik |
| 18 June 1980 | ||
| Sarpsborg | 2–0 | Strømsgodset |
| Frigg | 2–1 | Ørn |
| Lyn | 6–1 | Lillehammer |
| Bærum | 2–3 | Moss |
| Strømmen | 2–3 (a.e.t.) | Skeid |
| Lillestrøm | 8–0 | Lisleby |
| Kongsvinger | 3–1 | Grue |
| Vinstra | 1–4 | HamKam |
| Jevnaker | 1–3 | Vålerengen |
| Mjøndalen | 2–1 | Østsiden |
| Åssiden | 1–5 | Fredrikstad |
| Pors | 0–1 | Fram (Larvik) |
| Vigør | 3–1 | Start |
| Vigrestad | 0–2 | Haugar |
| Bryne | 0–1 | Jerv |
| Viking | 4–2 | Ulf |
| Brann | 2–0 | Ny-Krohnborg |
| Varegg | 3–2 | Os |
| Lærdal | 0–1 | Raufoss |
| Eid | 4–0 | Aalesund |
| Skarbøvik | 3–0 | Kristiansund |
| Molde | 2–1 | Ørsta |
| Sunndal | 0–1 | Tynset |
| Strindheim | 2–0 | Sverre |
| Fram (Skatval) | 0–5 | Rosenborg |
| Neset | 2–0 | Ranheim |
| Mjølner | 2–0 | Landsås |
| Tromsø | 0–4 | Bodø/Glimt |
| Alta | 1–1 (a.e.t.) | Lyngen |
| 19 June 1980 | ||
| Namsos | 1–3 | Mo |
| Replay: 25 June 1980 | ||
| Odd | 1–0 | Eik |
| Lyngen | 0–1 | Alta |
Third round
| Team 1 | Score | Team 2 |
|---|---|---|
| 3 July 1980 | ||
| Fredrikstad | 8–0 | Odd |
| Skarbøvik | 3–5 (a.e.t.) | Brann |
| Raufoss | 0–4 | Lillestrøm |
| Varegg | 1–3 | Viking |
| Skeid | 0–1 | Mjøndalen |
| Haugar | 3–1 (a.e.t.) | Vigør |
| Tynset | 3–2 (a.e.t.) | Strindheim |
| Moss | 3–1 (a.e.t.) | Kongsvinger |
| Fram (Larvik) | 3–2 | Sarpsborg |
| Mo | 3–0 | Mjølner |
| Jerv | 1–3 | Vard |
| 4 July 1980 | ||
| HamKam | 3–0 | Lyn |
| 5 July 1980 | ||
| Eid | 1–3 | Molde |
| Neset | 0–3 | Rosenborg |
| 6 July 1980 | ||
| Bodø/Glimt | 7–2 | Alta |
| Vålerengen | 4–1 | Frigg |
Fourth round
| Team 1 | Score | Team 2 |
|---|---|---|
| 6 August 1980 | ||
| Mo | 4–3 | Rosenborg |
| Mjøndalen | 2–1 (a.e.t.) | Moss |
| Viking | 2–0 | HamKam |
| Lillestrøm | 4–2 | Fram (Larvik) |
| Brann | 3–0 | Bodø/Glimt |
| Molde | 1–2 | Fredrikstad |
| Tynset | 0–3 | Vålerengen |
| 7 August 1980 | ||
| Vard | 2–1 | Haugar |
Quarter-finals
| Fredrikstad | 1–3 (a.e.t.) | Lillestrøm |
|---|---|---|
Te. Svendsen  70' |
Solér 85', 100' Dokken 94' (pen.) |
| Vålerengen | 3–1 (a.e.t.) | Vard |
|---|---|---|
| Davidsen 16' Foss 91'Røise 119' |
Aase 2' |
| Viking | 1–3 | Mo |
|---|---|---|
| Torb. Svendsen 51' |
Falck-Olsen 51' Råum 58'Hagh 68' |
Semi-finals
| Lillestrøm | 2–1 | Brann |
|---|---|---|
| Dokken 8' (pen.) Lund 20' |
Strand 64' |
| Mo | 0–0 (a.e.t.) | Vålerengen |
|---|---|---|
Replay
| Vålerengen | 2–0 | Mo |
|---|---|---|
| Haugen 14' Foss 18' |
Final
| Vålerengen | 4–1 | Lillestrøm |
|---|---|---|
| Haugen 34', 42' Olsen 38' (pen.)Jacobsen 80' |
Report | V. Hansen 15' |