The 2023 Copa del Rey de Baloncesto was the 87th edition of the Spanish Basketball King's Cup. It was managed by the ACB and was held in Badalona, in the Palau Municipal d'Esports in February 2023.

Club Joventut Badalona, S.A.D. is a Spanish professional basketball club based in Badalona, Catalonia, Spain, playing in the Liga ACB and the EuroCup. Known to their fans as La Penya, it is one of only two teams that have never been relegated from the top division of the Spanish League. The only other is Real Madrid. In 1994, Joventut Badalona became champion of the FIBA European League, the first Catalan basketball club to accomplish such a grandiose achievement and the first Spanish team to do so in the modern era Final Four format.