The King Alfonso XIII's Cup 1925 was the 25th staging of the Copa del Rey, the Spanish football cup competition.

Teams

A record twelve teams were invited to play the tournament, as the champion of Castile and León was also invited, while the Levante Championship was split into two tournaments: the Valencian Championship and the Murcian Championship. The following eleven teams competed (the entry of Real Murcia, winners of the newly formed Championship of Murcia, was rejected):

Group stage

The winner of each group advanced to the semifinals.

Group I

Group II

Tie-break match

Group III

Group IV

Semifinals

First leg:

Final