The 2023 Copa Federación de España was 31st edition of the Copa Federación de España, also known as Copa RFEF, a knockout competition for Spanish football clubs.

The Copa Real Federación Española de Fútbol, popularly known as the Copa Federación or Copa RFEF, is a Spanish football competition organised by the Royal Spanish Football Federation (RFEF). It has been held since the 1993−94 season as a tournament for smaller football clubs, with a format similar to that of the Copa del Rey.