Search gender: all male female Ominao Boy Name Meaning, Kanji Variations. 1 names found. gender: all male female Name: ominao Katakana: オミナオ 0 Kanji: 臣直 Meaning: 臣Vassal. A servant. One who serves a lord. People in general. 直Correct. Honest. Straight-hearted. fix. Direct. You can save your favorite names with NAZUKE PON > About Japanese Names > Search For Japanese Names > Ominao Boy Name Meaning, Kanji Variations.