Cognomen داون (Dawn 
, Down 
, Duun 
) , in the world, is a common surname. The surname داون is habitual in Taiwan, where it is quite a common surname, the United Kingdom, where it is quite a rare surname, and New Zealand. In absolute terms, it is the most numerous in India, Taiwan, and the United Kingdom. More frequently, داون is the forename as well as the last name.