The 1973 Norwegian Football Cup was the 68th edition of the Norwegian annual knockout football tournament. The Cup was won by Strømsgodset after beating Rosenborg in the cup final with the score 1–0. This was Strømsgodset's third Norwegian Cup title.
First round
Second round
| Team 1 | Score | Team 2 |
|---|---|---|
| 14 June 1973 | ||
| Brann | 1–0 | Stord |
| Bryne | 0–2 | Haugar |
| Drafn | 0–2 | Strømsgodset |
| Eidsvold Turn | 2–0 | Reinsvoll |
| Fredrikstad | 1–0 | Brumunddal |
| Harstad | 1–0 | Norild |
| Jerv | 0–5 | Frigg |
| Larvik Turn | 4–0 | Storm |
| Mjøndalen | 1–0 | Slemmestad |
| Moss | 0–1 | Grue |
| Nordlandet | 0–2 | Molde |
| Odd | 1–0 | Vindbjart |
| Odda | 1–2 (a.e.t.) | Fana |
| Raufoss | 4–0 | Gjøvik-Lyn |
| Rosenborg | 4–0 | Andenes |
| Sarpsborg | 6–2 | Asker |
| Stabæk | 2–3 | Lillestrøm |
| Start | 2–0 | Vidar |
| Stjørdals/Blink | 1–0 | Kvik (Trondheim) |
| Strinda | 2–2 (a.e.t.) | Sverresborg |
| Stålkameratene | 2–0 | Steinkjer |
| Sunndal | 0–0 (a.e.t.) | Falken |
| Tornado | 6–0 | Herd |
| Vard | 0–1 (a.e.t.) | Os |
| Varegg | 2–1 | Florvåg |
| Viking | 4–0 | Vigrestad |
| Vålerengen | 1–0 | Ull/Kisa |
| Østsiden | 0–2 | HamKam |
| Aalesund | 0–0 (a.e.t.) | Langevåg |
| Åndalsnes | 1–0 | Skarbøvik |
| Åssiden | 0–4 | Skeid |
| 20 June 1973 | ||
| Lyn | 1–2 (a.e.t.) | Lisleby |
| Replay: 20 June 1973 | ||
| Falken | 1–3 | Sunndal |
| Langevåg | 3–0 (a.e.t.) | Aalesund |
| Sverresborg | 0–5 | Strinda |
Third round
| Team 1 | Score | Team 2 |
|---|---|---|
| 27 June 1973 | ||
| Molde | 2–0 | Sunndal |
| Raufoss | 4–2 | Strinda |
| Stjørdals/Blink | 0–1 | Stålkameratene |
| 28 June 1973 | ||
| Grue | 3–3 (a.e.t.) | Fredrikstad |
| HamKam | 2–1 | Åndalsnes |
| Strømsgodset | 1–0 | Varegg |
| Haugar | 1–6 | Viking |
| Fana | 0–7 | Brann |
| Rosenborg | 3–1 | Harstad |
| Larvik Turn | 1–0 | Start |
| 29 June 1973 | ||
| Lisleby | 1–2 | Eidsvold Turn |
| Frigg | 3–0 | Sarpsborg |
| 1 July 1973 | ||
| Skeid | 3–0 | Odd |
| Lillestrøm | 5–3 | Mjøndalen |
| Os | 2–1 | Vålerengen |
| 4 July 1973 | ||
| Langevåg | 2–1 | Tornado |
| Replay: 4 July 1973 | ||
| Fredrikstad | 4–1 (a.e.t.) | Grue |
Fourth round
| Team 1 | Score | Team 2 |
|---|---|---|
| 19 August 1973 | ||
| Skeid | 0–5 | Lillestrøm |
| Stålkameratene | 1–2 | Strømsgodset |
| Viking | 3–2 | Os |
| Molde | 1–0 | Raufoss |
| Brann | 4–0 | Frigg |
| Eidsvold Turn | 1–4 | Rosenborg |
| HamKam | 1–0 | Langevåg |
| Fredrikstad | 3–1 | Larvik Turn |
Quarter-finals
| Fredrikstad | 0–1 | HamKam |
|---|---|---|
Torvik  46' |
Attendance: 4,727
| Strømsgodset | 1–0 | Lillestrøm |
|---|---|---|
| S. Pettersen 89' |
Attendance: 12,000
Semi-finals
| Strømsgodset | 1–0 | Viking |
|---|---|---|
| Presberg 87' |
Final
| Strømsgodset | 1–0 | Rosenborg |
|---|---|---|
| S. Pettersen 78' (pen.) |
Report |
Strømsgodset's winning squad: Inge Thun, Per Rune Wøllner, Johnny Vidar Pedersen, Tor Alsaker-Nøstdahl, Svein Dahl Andersen, Odd Arild Amundsen, Finn Aksel Olsen, Bjørn Odmar Andersen, Thorodd Presberg, Steinar Pettersen, Ingar Pettersen, Bjørn Erik Halvorsen, Helge Widemann Karlsen and Runar Larsen.