The 1985–86 Copa del Rey was the 84th staging of the Copa del Rey, the annual domestic cup competition in the Spanish football. The tournament was attended by 142 teams from the main categories of Spaniard football. The tournament began on 11 September 1985 and ended on 26 April 1986 with the final, held in Vicente Calderón Stadium in Madrid. Real Zaragoza won their third title and got reedit the title after 20 years. The final ended with a 1–0 victory over Barcelona with a solitary goal from Rubén Sosa.