The 2014–15 Copa Federación de España was the 22nd edition of the Copa Federación de España, also known as Copa RFEF, a knockout competition for Spanish football clubs in Segunda División B and Tercera División.
R. Unión defeated Castellón 4–0 on aggregate in the final.
R. Unión got the trophy and a cash prize of 90.152 euros and qualified for the next edition of the tournament.
Each winner of an Autonomous Community tournament received a prize of 3.005 euros.
Alondras, Barbadás, Boiro, Cerceda, Pontevedra and Rápido de Bouzas received a bye.
CD Ourense will not defend the title after being dissolved in July 2014.
Baleares won 2–2 on aggregate on away goals rule The draw for the quarter-finals was held 23 January 2015.