Search gender: all male female オコ Japanese Names Variations. 3 names found. gender: all male female Name: oko Katakana: オコ 0 Kanji: 緒子 Meaning: 緒The beginning of things. Connection. A thought caused by a thing. 子Children Name: oko Katakana: オコ 0 Kanji: 於子 Meaning: 於In. Indicates a time or place. 子Children Name: oko Katakana: オコ 0 Kanji: おこ Meaning: お こ You can save your favorite names with NAZUKE PON > About Japanese Names > Search Japanese Names By Kanji > オコ Japanese Names Variations.