Search gender: all male female Sumima Name Meaning, Kanji Variations. 1 names found. gender: all male female Name: sumima Katakana: スミマ 0 Kanji: 澄真 Meaning: 澄Clear. Water and sounds are clear and beautiful. The sky is not dull. 真True. Truth, not falsehood. Nature as it is. True form. Innate. You can save your favorite names with NAZUKE PON > About Japanese Names > Search For Japanese Names > Sumima Name Meaning, Kanji Variations.