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Cognomen Накаи (Nakai , Nakay , 中居 , and others...) , worldwide, is quite a rare family name. The family name Накаи is habitual in Tunisia, where it is quite a rare surname, Jamaica, and Japan, where it is a rare surname. Measured by absolute frequency, it most frequently occurs in India, the United States, and Japan. Likewise, Накаи is the forename as well as the last name.