Globally, Koso (Koso 
, Косо 
, كوسو 
) is quite a rare gender-neutral first name. The forename Koso is characteristic of Nigeria, where it is a rare gender-neutral name, India, where it is a very rare gender-neutral name, and Indonesia, where it is a very rare masculine name. More prevalently, Koso is the last name as well as the forename.