Cognomen Niago (Niago 
) , in the world, is a rare surname. The last name Niago is habitual in Ivory Coast, where it is a rare surname, Israel, and Indonesia, where it is a very rare surname. Not in comparison with a country's population, this name is the most popular in Indonesia, Ivory Coast, and Morocco. Very seldom, Niago is the forename as well as the last name.