Last name 杜南 (Dunant 
, 杜南 
, Doonan 
) , all around the world, is quite a rare cognomen. The surname 杜南 is characteristic of Ireland, where it is quite a rare surname, Switzerland, and Australia, where it is a rare surname. Not in comparison with a country's population, it is the most numerous in the United States, the United Kingdom, and Indonesia. Much less frequently, 杜南 is the forename as well as the last name.