The 2023 Supercopa de España de Baloncesto, also known as Supercopa Endesa for sponsorship reasons, was the 20th edition of the Supercopa de España de Baloncesto, an annual basketball competition for clubs in the Spanish basketball league system that were successful in its major competitions in the preceding season.

The tournament will feature the winners from the three major competitions (2022–23 Liga Endesa, 2023 Copa del Rey and 2022 Supercopa Endesa), the host team and the remaining highest ranked teams from the 2022–23 Liga Endesa season if vacant berths exist.

[2] On July 20, 2023, ACB selected and announced Murcia to host the supercup in September 2023.

It had a budget of 25 million dollars, and was the most modern arena in Europe the moment it was built.

The arena hosted the 1996 Copa del Rey de Baloncesto and 1998 All-Star weekend.