Search gender: all male female 勤 Japanese Girl Names Variations. 1 names found. gender: all male female Name: isoko Katakana: イソコ 1 Kanji: 勤子 Meaning: 勤To work. To work under the guidance of an organization. To devote oneself to Buddhism. Practice. To make an effort. To love oneself. restraining oneself. 子Children You can save your favorite names with NAZUKE PON > About Japanese Names > Search Japanese Names By Kanji > 勤 Japanese Girl Names Variations.