Ženski Košarkaški Klub Trešnjevka 2009 is a Croatian women's basketball club from Zagreb currently playing in the Croatian Women's League. Its major success was winning the Ronchetti Cup in 1980 beating Maritsa Plovdiv in the final; it was the only Yugoslav team that won the competition. It also reached the final in 1976 and 1981, but lost to Slavia Prague and Spartak Moscow. Following the break-up of Yugoslavia it won three national cups between 1993 and 1996 and the national championship in 1999, remaining a regular in the Ronchetti Cup's preliminary rounds through the decade.