Cognomen Heartless (Heartless 
, ใจร้าย, ใจนิล 
) , in the world, is a rare surname. The cognomen Heartless is habitual in Thailand, where it is a very rare surname, Italy, and the United States, where it is an extremely rare surname. In absolute terms, it is commonest in Thailand, China, and Italy. Much less frequently, Heartless is the forename as well as the last name.