Family name Дюбай (Dubail 
, Дюбай 
) , all over the world, is quite a rare surname. The last name Дюбай is habitual in Western Europe, particularly France, where it is quite a rare surname, Switzerland, where it is a rare surname, and Belgium. In absolute terms, it most frequently occurs in France, the United States, and Belgium. Very seldom, Дюбай is the forename as well as the last name.