| Copa del Rey | |
| Year: | 1977–78 |
| Other Titles: | 76th Copa del Rey |
| Country: |  Spain |
| Num Teams: | 174 |
| Winners: | FC Barcelona (18th title) |
| Second: | Las Palmas |
| Matches: | 343 |
| Prev Season: | 1976–77 |
| Next Season: | 1978–79 |
The 1977–78 Copa del Rey was the 76th staging of the Spanish Cup. The competition began on 14 September 1977 and concluded on 19 April 1978 with the final.
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See main article: 1978 Copa del Rey Final.
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