Family name Douang (Douang 
) , across the world, is quite a rare surname. The cognomen Douang is characteristic of Laos, where it is quite a common surname, France, where it is a rare surname, and Singapore, where it is a very rare surname. Not in comparison with a country's population, it is the most numerous in Laos, France, and the United States. Likewise, Douang is the forename as well as the last name.