Surname บูน (Bun 
, Buon 
, บูน 
) , worldwide, is a common cognomen. The surname บูน is characteristic of Malaysia, where it is quite a common surname, Brunei, and Hong Kong, where it is quite a rare surname. In absolute terms, it is commonest in Malaysia, Indonesia, and France. Much less frequently, บูน is the forename as well as the last name.