Family name داف (Dafa 
, Dav 
, Duff ) , around the globe, is a common last name. The last name داف is characteristic of Northern Europe, particularly Aland Islands, where it is quite a common surname, Ireland, and Guernsey (explore the name in all countries). Not in comparison with a country's population, it most frequently occurs in the United States, Indonesia, and the United Kingdom. Likewise, داف is the forename as well as the last name.