Surname วงศ์ธัญวัฒน์ (วงศ์ธัญวัฒน์ 
) , around the world, is a very rare last name. The cognomen วงศ์ธัญวัฒน์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, วงศ์ธัญวัฒน์ is the forename as well as the last name.