Using graphic elements like this world map, to see in which countries or regions of the world the surname Boudiar is more common, is of great help.
The quantity of people with the surname Boudiar that we can find in each country can help us discern the origin of the surname Boudiar, as logic tells us that the place with the most people surnamed Boudiar will be the country or area of origin of the surname Boudiar.