The Copa del Rey 1910 comprised two different competitions held the same year.
Due to disagreements between the reigning champion of the tournament, Club Ciclista de San Sebastián, and some of the clubs invited, in 1910 two parallel competitions were held: an "official", organized by the newly created FECF (Federación Española de Clubs de Football), forerunner of the Royal Spanish Football Federation (Spanish: Real Federación Española de Fútbol, RFEF), in Madrid and an "unofficial", organized by the UECF (Unión Española de Clubs de Football), in San Sebastián. Both are currently recognized as official by the RFEF.