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Throughout the world, Ruiko (Ruiko ) is a rare primarily female, but very seldom masculine first name. The given name Ruiko is characteristic of Japan, where it is a rare girly name, and the United States, where it is an extremely rare predominantly feminine, but scarcely male name. Very seldom, Ruiko is the last name as well as the forename.
Ono, Pierce, Tanaka, Harada, Hanano, Uchida, Shimizu, Kobashi, Rollins, Connor, Hoshida, Maharjan, Morikami, Katayama, Kawaguchi, Tokunaga, Iwashita, Watanabe, Yamamoto, Maruyama, Sakuma, Miller, Yokoi, Oda, Sera, Kato, Kano, Kono, Hoya, Yano, Munoz, Murmu, Saito, Smith, Jones, Tamai, Nagai, Inoue, Osaku, Okano, Ozaki, Ohkura, Mochimaru, and Yamaguchi