Search gender: all male female Uio Boy Name Meaning, Kanji Variations. 1 names found. gender: all male female Name: uio Katakana: ウイオ 0 Kanji: 有爲男 Meaning: 有To exist. To have. To keep. To hold on to. Also. In addition to. Wealth. Property. 爲Do. 男Male. Adult male. Son. You can save your favorite names with NAZUKE PON > About Japanese Names > Search For Japanese Names > Uio Boy Name Meaning, Kanji Variations.