1983–84 Copa del Rey
The 1983–84 Copa del Rey was the 82nd staging of the Spanish Cup, the annual domestic football cup competition in Spain. The tournament was attended by 136 teams from the higher echelons of Spanish football.
The tournament began on 7 September 1983 and ended on 5 May 1984 with the final, held in Santiago Bernabéu Stadium, in Madrid.
FC Barcelona played their second consecutive final but lost to Athletic Bilbao in a match remembered for its incidents, toughness and especially the scuffle at the end. The match was preceded by controversial statements from both sides and with memories of the previous game in which Maradona was seriously injured. Once the game finished, Maradona himself started a fight that ended with all players in a pitched battle.
The match ended with a 1–0 victory for the Basque team. This was their twenty-third win in this competition and was part of their fifth double.
Format
| Round | Fixture | Clubs | Gain entry |
| 1st round | 64 | 136 → 72 | All Clubs participating gain entry |
| 2nd round | 34 | 72 → 38 | Atlético de Madrid, Real Madrid CF, Sevilla FC |
| 3rd round | 18 | 38 → 20 | - |
| 4th round | 4 | 20 → 16 | Athletic Bilbao |
| Round of 16 | 8 | 16 → 8 | FC Barcelona |
| 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 | 26 |
| 3ª División | 72 |
| Total teams | 136 |
- 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.
1st round
2nd round
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 1983–84 winners |
| Athletic Bilbao 23rd title |