| King Alfonso XIII's Cup | |
| Year: | 1930 |
| Other Titles: | 30th Copa del Rey |
| Country: | Spain |
| Num Teams: | 31 |
| Defending Champions: | RCD Español |
| Winners: | Athletic Bilbao |
| Count: | 10 |
| Second: | Real Madrid |
| Matches: | 63 |
| Goals: | 245 |
| Prev Season: | 1928–29 |
| Next Season: | 1931 |
The King Alfonso XIII's Cup 1930 was the 30th staging of the Copa del Rey, the Spanish football cup competition.
The competition started on April 6, 1930, and concluded on June 1, 1930, with the final, held at the Montjuïch Stadium in Barcelona. Athletic Bilbao won their tenth title.
Iberia SC, Patria Aragón
Real Oviedo, Sporting de Gijón
FC Barcelona, CD Europa, RCD Español
Real Unión, Real Sociedad, CA Osasuna
Real Madrid, Athletic Madrid, Racing de Madrid
Athletic Bilbao, CD Alavés, Arenas Club de Getxo
The first leg was played on April 6. The second leg was played on April 13.|}Real Betis received a bye.
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The first leg was played on April 20. The second leg was played on April 27.|}
The first leg was played on May 4. The second leg was played on May 11.|}
The first leg was played on May 18. The second leg was played on May 25.|}
Played on May 27 in Zaragoza.|}
See main article: article and 1930 Copa del Rey Final.