Cognomen เหมวงศ์ (เหมวงศ์ 
, Hemawong 
) , globally, is a rare last name. The cognomen เหมวงศ์ is habitual in Thailand, where it is a rare surname, and the United States, where it is an extremely rare surname. Much less frequently, เหมวงศ์ is the forename as well as the last name.