Search gender: all male female Sanei Boy Name Meaning, Kanji Variations. 1 names found. gender: all male female Name: sanei Katakana: サンエイ 0 Kanji: 三英 Meaning: 三Three. The third. Kanji to represent the number 3 (three).Again. Again and again. Many times. 英To excel. Flower. Abbreviation for British. Abbreviation for English. You can save your favorite names with NAZUKE PON > About Japanese Names > Search For Japanese Names > Sanei Boy Name Meaning, Kanji Variations.