Family name Дюфур (Dufour 
, Дюфур 
) , all over the world, is a common cognomen. The cognomen Дюфур is characteristic of France, where it is quite a common surname, Canada, and Guadeloupe (explore the name in all countries). Measured by absolute frequency, it is the most numerous in France, Canada, and the United States. Very seldom, Дюфур is the forename as well as the last name.