Search gender: all male female Onko Name Meaning, Kanji Variations. 1 names found. gender: all male female Name: onko Katakana: オンコウ 0 Kanji: 温厚 Meaning: 温Warmth. Temperature. Soothing. Gentle. To cherish. 厚Thick. Deep. Careful manner. General clothing made of silk. You can save your favorite names with NAZUKE PON > About Japanese Names > Search For Japanese Names > Onko Name Meaning, Kanji Variations.