Search gender: all male female リュウオン Japanese Boy Names Variations. 2 names found. gender: all male female Name: ryuon Katakana: リュウオン 0 Kanji: 瑠恩 Meaning: 瑠Lapis lazuli. 恩Debt of gratitude Name: ryuon Katakana: リュウオン 0 Kanji: 龍恩 Meaning: 龍Dragon. An imaginary animal. An outstanding person. A hero. A parable of the Son of Heaven. A word used for things related to the Son of Heaven. Dinosaurs. 恩Debt of gratitude You can save your favorite names with NAZUKE PON > About Japanese Names > Search Japanese Names By Kanji > リュウオン Japanese Boy Names Variations.