The Copa del Rey de Baloncesto 2012–13 was the 77th edition of the Spanish King's Basketball Cup. It is managed by the ACB League and was held in Vitoria-Gasteiz, in the Fernando Buesa Arena on February 7–10, 2013. FC Barcelona Regal was the champion.

Fernando Buesa Arena is an indoor sports arena in Vitoria-Gasteiz, Spain. It is primarily used for basketball and is the home arena of Saski Baskonia.