Cognomen Гадуа (Gadua 
, Гадуа 
, Gadoua 
) , in the entire world, is quite a common surname. The last name Гадуа is characteristic of the Democratic Republic of the Congo, where it is quite a rare surname, Belarus, where it is a rare surname, and Canada. In absolute terms, it most frequently occurs in India, the Democratic Republic of the Congo, and the United States. Very seldom, Гадуа is the forename as well as the last name.