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Cognomen Koiwa (小岩 , Koiwa , Коива ) , around the world, is a rare surname. The family name Koiwa is characteristic of China, where it is a very rare surname, Japan, and Malaysia. In absolute terms, it is commonest in China, Japan, and Brazil. More frequently, Koiwa is the forename as well as the last name.
VARIANT | COUNTRY |
---|---|
小岩 | China |
Koiwa | Malaysia, Brazil, United States, Japan, China |
Коива | Russia |