Cognomen 卡卡 (卡卡 
, Kaká 
) , across the world, is a rare surname. The last name 卡卡 is habitual in Angola, where it is a rare surname, Portugal, where it is a very rare surname, and China. In absolute terms, it most frequently occurs in China, Angola, and Brazil. More prevalently, 卡卡 is the forename as well as the last name.