>
Cognomen Kuroiwa (Kuroiwa , Куроива) , throughout the world, is quite a rare surname. The surname Kuroiwa is habitual in Paraguay, where it is quite a rare surname, Peru, where it is a rare surname, and Singapore. Not in comparison with a country's population, the name is most common in Brazil, Paraguay, and Japan. Very seldom, Kuroiwa is the forename as well as the last name.