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.
The second leg was played on April 13.
Real Betis received a bye.