Worldwide, Ику (Iku 
, Ику, Ikuu 
) is quite a rare unisex first name. The forename Ику is characteristic of Nigeria, where it is a rare epicene name, Tanzania, where it is a rare boy's name, and Indonesia, where it is a very rare gender-neutral name. Not in comparison with a country's population, this name is the most popular in Nigeria, India, and Indonesia. Very seldom, Ику is the last name as well as the forename.