Search gender: all male female 坦 Japanese Girl Names Variations. 1 names found. gender: all male female Name: hiroko Katakana: ヒロコ 0 Kanji: 坦子 Meaning: 坦Flat 子Children You can save your favorite names with NAZUKE PON > About Japanese Names > Search Japanese Names By Kanji > 坦 Japanese Girl Names Variations.