Last name ทัศนาวงศ์ (ทัศนาวงศ์ 
, Tassanawong , Thasanawong) , in the entire world, is an extremely rare family name. The surname ทัศนาวงศ์ is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Also, ทัศนาวงศ์ is the forename as well as the last name.