Cognomen Shintaro (Shintaro 
, Шинтаро 
, Shintarō 
) , across the world, is a rare last name. The cognomen Shintaro is characteristic of Singapore, where it is a rare surname, Indonesia, and Japan, where it is a very rare surname. Not in comparison with a country's population, it is commonest in Indonesia, China, and Japan. Likewise, Shintaro is the forename as well as the last name.