The Copa de S.M. la Reina (Queen's Cup) is an annual cup competition for Spanishwomen's basketball teams. The first edition of the competition, originally named Women's Senior Basketball Championship, took place in 1943, which makes it the oldest Spanish women's basketball competition, but it was only since 1978, when it took its current name, that it has been carried every year. The 2012 cup marked the 50th edition of the competition.
The cup is played by the top teams of the Spanish Women's League's table in the mid of the season. It used to be a Final Eight, but since 2010 the competition has been reduced to just four teams.