Across the world, Niioka (Niioka , Нииока) is an extremely rare unknown gender forename. Much more frequently, Niioka is the last name as well as the forename.
Araoka, Shinoka, Sinoka, ニイオカ, and 西岡
Eri, Masayuki, Yasushi, Tatsuya, Shugetsu, Shinobu, Yoichi, Hidero, Masahiro, Takuya, Megumi, Yuji, Yuki, Hidi, Toru, Kozo, Maki, Shinji, and Hidetoshi
, Нииока) is an extremely rare unknown gender forename. Much more frequently, Niioka is the last name as well as the forename.