Surname Аико (Aiko 
, Ayko 
, Аико 
) , across the world, is quite a rare family name. The cognomen Аико is habitual in Trinidad and Tobago, where it is quite a rare surname, Benin, and Latvia, where it is a rare surname. Not in comparison with a country's population, the name is most common in Indonesia, Japan, and Kenya. More prevalently, Аико is the forename as well as the last name.