Family name くにこ (Kuniko 
, くにこ) , throughout the world, is a rare last name. The surname くにこ is habitual in Japan, where it is a rare surname, Indonesia, where it is a very rare surname, and Spain. Not in comparison with a country's population, it is commonest in Japan, Indonesia, and China. Predominantly, くにこ is the forename as well as the last name.