The Copa del Rey de Baloncesto (English: King's Cup of Basketball) is an annual cup competition for Spanishbasketball teams organized by Spain's top professional league, Asociación de Clubes de Baloncesto. It was originally known as the Copa de España de Baloncesto and was first played in 1933. It was the first nationwide basketball competition played in Spain. During the Franco years it was referred to as the Copa del Generalísimo, before becoming the Copa del Rey in 1977.
Since 1987, the Final Eight format has been used. At the end of the first half of the regular season, the top eight teams from the Spanish League qualify. The eight teams play a play-off at one venue, over four days, eventually producing a winner. The Final Eight is one of the highlights of the Spanish sporting calendar.