The2020–21 Copa del Rey was the 119th staging of theCopa del Rey (including two seasons where two rival editions were played). The winners were assured a place in the2021–22 UEFA Europa League group stage. Both the winners and the runners-up qualified for the four-team2022 Supercopa de España.

Real Sociedad were the defending champions, having won the postponedfinal of the previous edition, which was held two weeks before the2021 final.^[1] They were already eliminated byReal Betis in the round of 16 of the 2020–21 edition, before the previous final had been played. Barcelona won thefinal 4–0 againstAthletic Bilbao for a record-extending 31st Copa del Rey title.^[2][3]

As across Spain, match times up to 25 October 2020 and from 28 March 2021 wereCEST (UTC+2). Times on interim ("winter") days wereCET (UTC+1).

On 14 September 2020, theRFEF released the calendar of the competition and confirmed the format of the previous season would remain.^[4]

Notes

• The semi-finals used theaway goals rule.
• Games ending in a draw were decided in extra time, and if still level, by a penalty shoot-out.

The following teams qualified for the competition. Reserve teams were excluded.

Teams were divided into four groups according to geographical criteria.

Rusadir (5) vRincón (5)

11 November 2020	Rusadir (5)	1–2	Rincón (5)	Melilla
18:00	Mohamed 9' (pen.) Farid I 25' (pen.)	Report	Johnson 21'	Stadium:La Espiguera Referee: Carlos Agraz Díaz

Montañesa (4) vCantolagua (4)

11 November 2020	Montañesa (4)	0–1	Cantolagua (4)	Barcelona
19:00		Report	Beñat 71'	Stadium:Municipal Nou Barris Referee: Borja Guijarro Colomer

Miengo (5) vRibadumia (4)

11 November 2020	Miengo (5)	0–1	Ribadumia (4)	Miengo
20:00		Report	Aval 75'	Stadium:Cuchía Referee: Jon Ander Azkuenaga Astorkiza

Guía (4) vBuñol (5)

11 November 2020	Guía (4)	0–1	Buñol (5)	Santa María de Guía
21:30 (20:30WET)		Report	Albert 75'	Stadium:Octavio Estévez Referee: Cristian Sánchez Moraga

Notes

The first round was played by all the qualified teams, except for the four participants of the2021 Supercopa de España. The ten winners from the previous preliminary round were paired with ten teams fromLa Liga. The remaining six teams and the 22 teams of theSegunda División were paired with the fourCopa Federación semi-finalists, the fourteen teams that competed in theTercera División and ten teams fromSegunda B. Finally, the remaining 36 teams fromSegunda B were paired between them. In the case of opponents from the same division, the home advantage was decided by whichever team was drawn first; otherwise, the match was held in the stadium of the lower division team. A total of 56 games were played, with 112 participating teams, from 15 to 30 December 2020.^[5]

The draw was held on 16 November at theEstadio de La Cartuja,Seville. Teams were divided into five pots.^[5]

The draw was held on 18 December in the RFEF headquarters inLas Rozas. Teams were divided into four pots according to their division in the 2020–21 season. Tercera División teams were drawn with others from La Liga, while the remaining Segunda B and Tercera teams were drawn with teams from La Liga and Segunda División. Matches were played at the home of the lower-ranked team.

† The identity of this team was unknown at the time of the draw

The four participant teams of the2021 Supercopa de España were drawn with the teams from the lowest category. After them, the remaining teams from the lowest categories faced the rest of La Liga teams. Matches were played at the home of the lower-ranked team, with exceptions due toStorm Filomena noted below. The draw was held on 8 January 2021.