Family name ドア (Doa 
, Door 
, Dorr 
) , globally, is a common last name. The surname ドア is habitual in Nicaragua, where it is quite a common surname, Israel, and Belgium, where it is quite a rare surname. In absolute terms, the name is most common in the United States, Indonesia, and Brazil. Very seldom, ドア is the forename as well as the last name.