Search gender: all male female Tomosaku Name Meaning, Kanji Variations. 1 names found. gender: all male female Name: tomosaku Katakana: トモサク 0 Kanji: 友佐 Meaning: 友Friend 佐Auxiliary. To help. To support and help by your side. To encourage. You can save your favorite names with NAZUKE PON > About Japanese Names > Search For Japanese Names > Tomosaku Name Meaning, Kanji Variations.