Surname Киёко (Kiyoko 
, Киёко 
, Kijoko 
) , globally, is quite a rare family name. The cognomen Киёко is habitual in Japan, where it is a rare surname, the Democratic Republic of the Congo, and Myanmar, where it is a very rare surname. Not in comparison with a country's population, it most frequently occurs in Japan, the Democratic Republic of the Congo, and China. Much more prevalently, Киёко is the forename as well as the last name.