1986–87 Copa del Rey
The 1986–87 Copa del Rey was the 85th staging of the Copa del Rey. The winners of this year's Copa qualified for the 1987–88 European Cup Winners' Cup. The competition began on 17 September 1986 and concluded on 27 June 1987 with the final.
1st round
17 September 1986Bye: San Sebastián CF, Valladolid Promesas, Atlético Astorga CF, Mallorca Atlético, CD Roquetas, UE Lleida, CD Olímpic de Xàtiva, Cartagena FC, CD Rayo Cantabria
2nd round
1 October 1986Bye: Bilbao Athletic, Atlético Baleares, Atlético Marbella, UD Montijo, Real Balompédica Linense, Deportivo de La Coruña, UP Langreo.
3rd round
4th round
Bracket
Round of 16
First leg
Second leg
Quarter-finals
First leg
Second leg
Semi-finals
First leg
Second leg
Final
| Copa del Rey 1986–87 winners |
| Real Sociedad 2nd title |