Family name 卡娅 (Kaia 
, 卡娅 
) , in the world, is quite a rare surname. The cognomen 卡娅 is characteristic of Papua New Guinea, where it is quite a rare surname, Georgia, where it is a rare surname, and Greece. Measured by absolute frequency, it most frequently occurs in Papua New Guinea, Indonesia, and Kenya. More frequently, 卡娅 is the forename as well as the last name.