Cognomen Васиу (Wasiu 
, Васиу 
) , around the world, is a widespread last name. The surname Васиу is habitual in Nigeria, where it is a common surname, Maldives, where it is quite a rare surname, and Iceland. In absolute terms, it is the most numerous in Sub-Saharan Africa, particularly Nigeria, Ghana, and Niger. Also, Васиу is the forename as well as the last name.