Family name ธงสวัสดิ์ (ธงสวัสดิ์ 
) , across the world, is a very rare surname. The family name ธงสวัสดิ์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Likewise, ธงสวัสดิ์ is the forename as well as the last name.