Cognomen シゲマサ (Shigemasa 
, シゲマサ ) , all around the world, is quite a rare family name. The cognomen シゲマサ is habitual in Japan, where it is a rare surname, the United States, where it is a very rare surname, and Canada, where it is an extremely rare surname. Not in comparison with a country's population, it is the most numerous in Japan, the United States, and China. Predominantly, シゲマサ is the forename as well as the last name.