Search gender: all male female 塙 Japanese Names Variations. 1 names found. gender: all male female Name: koya Katakana: コウヤ 0 Kanji: 塙也 Meaning: 塙Hard soil 也Affirmation. Words for exclamations, questions, and antonyms. You can save your favorite names with NAZUKE PON > About Japanese Names > Search Japanese Names By Kanji > 塙 Japanese Names Variations.