| 1984 Norwegian Football Cup | |
| Other Titles: | Norgesmesterskapet i fotball for herrer |
| Country: |  Norway |
| Num Teams: | 128 (main competition) |
| Defending Champions: | Moss |
| Winners: | Fredrikstad (10th title) |
| Second: | Viking |
| Prev Season: | 1983 |
| Next Season: | 1985 |
The 1983 Norwegian Football Cup was the 79th edition of the Norwegian annual knockout football tournament. The Cup was won by Fredrikstad after beating Viking in the cup final. It took a replay to decide the winner. This was Fredrikstad's tenth Norwegian Cup title. They had to wait 22 years for their eleventh title, in 2006.
|colspan="3" style="background-color:#97DEFF"|23 May 1984|-|colspan="3" style="background-color:#97DEFF"|29 May 1984|-|colspan="3" style="background-color:#97DEFF"|30 May 1984|-|colspan="3" style="background-color:#97DEFF"|31 May 1984|-|colspan="3" style="background-color:#97DEFF"|Unknown date|-|colspan="3" style="background-color:#97DEFF"|Replay: 5 June 1984|-|colspan="3" style="background-color:#97DEFF"|Replay: 6 June 1984|}
|colspan="3" style="background-color:#97DEFF"|13 June 1984|-|colspan="3" style="background-color:#97DEFF"|14 June 1984|-|colspan="3" style="background-color:#97DEFF"|Replay: 20 June 1984|-|colspan="3" style="background-color:#97DEFF"|Replay: 21 June 1984|-|colspan="3" style="background-color:#97DEFF"|Replay: 22 June 1984|}
|colspan="3" style="background-color:#97DEFF"|22 June 1984|-|colspan="3" style="background-color:#97DEFF"|28 June 1984|-|colspan="3" style="background-color:#97DEFF"|Replay: 3 July 1984|-|colspan="3" style="background-color:#97DEFF"|Replay: 4 July 1984|}
|colspan="3" style="background-color:#97DEFF"|2 July 1984|-|colspan="3" style="background-color:#97DEFF"|4 July 1984|-|colspan="3" style="background-color:#97DEFF"|25 July 1984|-|colspan="3" style="background-color:#97DEFF"|1 August 1984|-|colspan="3" style="background-color:#97DEFF"|22 August 1984|}
|colspan="3" style="background-color:#97DEFF"|5 September 1984|-|colspan="3" style="background-color:#97DEFF"|Replay: 19 September 1984|}
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See main article: 1984 Norwegian Football Cup final.