| 1988 Norwegian Football Cup | |
| Other Titles: | Norgesmesterskapet i fotball for herrer |
| Country: |  Norway |
| Num Teams: | 128 (main competition) |
| Defending Champions: | Bryne |
| Winners: | Rosenborg (4th title) |
| Second: | Brann |
| Prev Season: | 1987 |
| Next Season: | 1989 |
The 1988 Norwegian Football Cup was the 83rd edition of the Norwegian annual knockout football tournament. The Cup was won by Rosenborg after they beat Brann in the final. It took a replay to decide the winner. This was Rosenborg's fourth Norwegian Cup title.
|colspan="3" style="background-color:#97DEFF"|16 May 1988|-|colspan="3" style="background-color:#97DEFF"|18 May 1988|-|colspan="3" style="background-color:#97DEFF"|19 May 1988|}
|colspan="3" style="background-color:#97DEFF"|10 June 1988|-|colspan="3" style="background-color:#97DEFF"|11 June 1988|-|colspan="3" style="background-color:#97DEFF"|12 June 1988|}
|colspan="3" style="background-color:#97DEFF"|6 July 1988|}
|colspan="3" style="background-color:#97DEFF"|3 August 1988|-|colspan="3" style="background-color:#97DEFF"|4 August 1988|}
|colspan="3" style="background-color:#97DEFF"|24 August 1988|}
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See main article: 1988 Norwegian Football Cup final.