1990–91 Copa del Rey
Team 1 Agg Team 2 1st leg 2nd leg
Cádiz CF 3-1 Athletic Bilbao 1-0 2-1
Deportivo de La Coruña 3-2 CD Málaga 3-2 0-0
Elche CF 2-1 Palamós CF 2-1 0-0
UD Las Palmas 4-1 Celta 2-0 2-1
Real Murcia 1-3 CD Logroñés 1-0 0-3
Orihuela Deportiva CF 2-3 RCD Español 0-0 2-3
Real Oviedo 1-3 RCD Mallorca 1-1 0-2
Rayo Vallecano 0-2 Real Betis 0-0 0-2
Real Valladolid 2-0 CD Tenerife 1-0 1-0
Real Zaragoza 1-2 Sporting Gijón 1-1 0-1
Fifth round
The 1990-91 Copa del Rey was the 89th staging of the Spanish Cup. The competition began on 5 September 1990 and ended on 29 June 1991 with the final.