Search gender: all male female マス Japanese Boy Names Variations. 1 names found. gender: all male female Name: masu Katakana: マス 0 Kanji: 益 Meaning: 益Increase. Something that is beneficial to people and the world. Something that is useful. Profit. You can save your favorite names with NAZUKE PON > About Japanese Names > Search Japanese Names By Kanji > マス Japanese Boy Names Variations.