Cognomen หวั่น (Wan 
, หวั่น) , around the world, is a widespread family name. The cognomen หวั่น is characteristic of Hong Kong, where it is a common surname, Bermuda, and Macao (explore the name in all countries). Measured by absolute frequency, it is commonest in China, Malaysia, and Hong Kong. Much less frequently, หวั่น is the forename as well as the last name.