The Japanese surname Saito (斎藤) is a familiar name that learners may see in Japanese media, school materials, and everyday name examples. This article explains its kanji, reading, pronunciation, long vowel note, and basic meaning. Quick Answer: Saito (斎藤) Surname 斎藤 Common Reading Saito Hiragana さいとう Katakana サイトウ Romaji Saito, Saitō, or Saitou Long Vowel Note The とう part in さいとう is pronounced with a long “o” sound. What Does the Japanese Surname Saito (斎藤) Mean? The surname Saito (斎藤) is written with two kanji: 斎 and 藤. 斎 (sai) can relate to purification, religious practice, or sacred settings. 藤 ...