Cognomen Каё (Kayo 
, Каё 
) , all around the world, is a common family name. The cognomen Каё is habitual in Cameroon, where it is quite a rare surname, Indonesia, and Kenya. Measured by absolute frequency, this name is the most popular in Indonesia, Cameroon, and the Democratic Republic of the Congo. Also, Каё is the forename as well as the last name.