Cognomen Chwang (Chwang 
, ฉวาง 
) , in the world, is a rare last name. The cognomen Chwang is characteristic of Thailand, where it is a rare surname, Malaysia, and Australia, where it is a very rare surname. In absolute terms, it is the most numerous in Thailand, Malaysia, and Nigeria. Much less frequently, Chwang is the forename as well as the last name.