The King Alfonso XIII's Cup 1924 was the 24th staging of the Copa del Rey, the Spanish football cup competition. The competition started on 23 March 1924, and concluded on May 4, 1924, with the final, held at the Estadio de Atotxa in San Sebastián, in which Real Unión lifted the trophy for the second time (third time counting the trophy won by Racing de Irun in 1913) with a 1–0 victory over Real Madrid with José Echeveste netting the only goal of the match.

Teams

Preliminary round

First leg

Second leg

Barcelona qualified for the quarter-finals 1–17 on agg. Sporting Gijón qualified for the quarter-finals 2–10 on agg.

Quarterfinals

First leg

Second leg

Real Madrid qualified for the semifinals 7–2 on agg. Real Unión qualified for the semifinals 3–1 on agg. Athletic Bilbao qualified for the semifinals 7–2 on agg.

Tie break

Barcelona qualified for the semifinals 5–3 on agg.

Semifinals

First leg

Second leg

Tie Break

Madrid qualified for the final 5–3 on agg. Unión qualified for the final 7–3 on agg.

Final