Surname 杜瓦 (Dua 
, Duva 
, Duvall ) , all around the world, is a common last name. The cognomen 杜瓦 is habitual in Seychelles, where it is quite a common surname, Albania, where it is quite a rare surname, and the United States. Measured by absolute frequency, it is commonest in India, the United States, and Indonesia. Much less frequently, 杜瓦 is the forename as well as the last name.