Search gender: all male female コエ Japanese Boy Names Variations. 2 names found. gender: all male female Name: koe Katakana: コエ 0 Kanji: 琥慧 Meaning: 琥A gemstone in the shape of a tiger. A yellow or yellowish-brown stone. 慧Wisdom. The ability of the mind to see into the mind. Name: koe Katakana: コエ 0 Kanji: 声 Meaning: 声Voice You can save your favorite names with NAZUKE PON > About Japanese Names > Search Japanese Names By Kanji > コエ Japanese Boy Names Variations.