Last name ธนาวงศ์ (ธนาวงศ์ 
, Thnawong) , all over the world, is a very rare surname. The cognomen ธนาวงศ์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, ธนาวงศ์ is the forename as well as the last name.