In the world, Iero (Iero 
, Айеро 
, איירו 
) is a rare boy's forename. The first name Iero is habitual in Guinea-Bissau, where it is quite a common boy's name, Italy, where it is a very rare unisex name, and China, where it is an extremely rare boy's name. Likewise, Iero is the last name as well as the forename.