1980–81 Copa del Rey
The 1980–81 Copa del Rey was the 79th staging of the Spanish Cup, the annual domestic cup competition in the Spanish football. The tournament was attended by 138 teams from the main categories of Spanish football.
The tournament began on 10 September 1980 and ended on 18 June 1981 with the final, held in Vicente Calderón Stadium in Madrid, in which the FC Barcelona was crowned for the nineteenth time in their history, after beating Sporting de Gijón 3–1.
The defending champions, Real Madrid CF, were defeated 4–3 by Sporting de Gijón on their way to reach their first final.
Format
| Round | Fixture | Clubs | Gain entry |
| First round | 66 | 138 → 72 | All Clubs participating gain entry |
| Second round | 35 | 72 → 37 | FC Barcelona, Castilla CF, Sporting de Gijón, Valencia CF |
| Third round | 18 | 37 → 19 | Real Sociedad |
| Fourth round | 3 | 19 → 16 | - |
| Round of 16 | 8 | 16 → 8 | Real Madrid CF |
| Quarter-finals | 4 | 8 → 4 | - |
| Semi-finals | 2 | 4 → 2 | - |
| Final | 1 | 2 → 1 | - |
| Division | No. clubs |
| 1ª División | 18 |
| 2ª División | 20 |
| 2ª División B | 28 |
| 3ª División | 72 |
| Total teams | 138 |
- All rounds are played over two legs except the final which is played a single match in a neutral venue. The team that has the higher aggregate score over the two legs progresses to the next round.
- In case of a tie on aggregate, will play an extra time of 30 minutes, and if still tied, will be decided with a penalty shoot-outs.
- The teams that play European competitions are exempt until the round of 16 or when they are removed from the tournament.
- The winners of the competition will earn a place in the group stage of next season's UEFA Cup Winners' Cup, if they have not already qualified for European competition, if so then the runners-up will instead take this berth.
Fourth round
Final
| Copa del Rey 1980–81 winners |
| FC Barcelona 19th title |