1919 Copa del Rey
|19th Copa del Rey|
|Defending champions||Real Union|
|Champions||Arenas Club de Getxo (1st title)|
|Goals scored||55 (4.23 per match)|
The competition started on April 12, 1919, and concluded on May 18, 1919, with the Final, held at the Martínez Campos in Madrid, in which Arenas Club de Getxo lifted the trophy for the first time ever with a 5–2 victory over FC Barcelona.
- Biscay: Arenas Club de Getxo
- Gipuzkoa: Real Sociedad
- Center Region: Racing de Madrid
- South Region: Sevilla FC
- Galicia: Real Vigo Sporting
- Asturias: Sporting de Gijón
- Catalonia: FC Barcelona
- Levante: CD Águilas 
Arenas Club de Getxo and Racing de Madrid won one match each. At that year, the goal difference was not taken into account. A replay match was played.
Sporting de Gijón and Real Vigo Sporting tied 0–0. A replay match was played.
FC Barcelona won 2–0 on aggregate matches and qualified for the semifinals.
Arenas Club qualified for the semifinals.
Real Vigo qualified for the semifinals.
|Arenas Club de Getxo||5–2|
|Sesúmaga 12', 80', 96'
| 38' Viñals
|Copa del Rey 1919 winners|
|Arenas de Getxo|
- CD Águilas withdrew before the start of the tournament.