Search gender: all male female Daijo Boy Name Meaning, Kanji Variations. 1 names found. gender: all male female Name: daijo Katakana: ダイジョウ 0 Kanji: 大城 Meaning: 大Big. Large. Large in number or quantity. Greatly. Valuable. Important. Excellent. Splendid. Very much. Much. (Power or force) strong. long time. To be high in rank or position. 城Castle You can save your favorite names with NAZUKE PON > About Japanese Names > Search For Japanese Names > Daijo Boy Name Meaning, Kanji Variations.