Around the world, Nisio (ニシオ 
, Nisio 
, Исин 
) is a rare male first name. The forename Nisio is habitual in Bulgaria, where it is a rare boy's name, Brazil, and the Dominican Republic. Not in comparison with a country's population, it is the most numerous in Brazil, Bulgaria, and Italy. Very seldom, Nisio is the last name as well as the forename.