Cognomen วอห์น (Wo 
, วอห์น 
) , across the world, is a common surname. The last name วอห์น is habitual in Hong Kong, where it is quite a common surname, Macao, and Malaysia, where it is quite a rare surname. Measured by absolute frequency, it is commonest in China, Indonesia, and Hong Kong. Likewise, วอห์น is the forename as well as the last name.