Search gender: all male female Nikio Boy Name Meaning, Kanji Variations. 1 names found. gender: all male female Name: nikio Katakana: ニキオ 0 Kanji: 二輝男 Meaning: 二Two, The second. Kanji character for the number 2 (two).The next. Again. Another. Different. 輝Shining. Glittering. Brilliant. Splendid. 男Male. Adult male. Son. You can save your favorite names with NAZUKE PON > About Japanese Names > Search For Japanese Names > Nikio Boy Name Meaning, Kanji Variations.