Family name Делаж (Delage 
, Делаж) , globally, is a common surname. The family name Делаж is habitual in France, where it is quite a common surname, Luxembourg, where it is quite a rare surname, and Canada. In absolute terms, this name is the most popular in France, Canada, and the United States. Very seldom, Делаж is the forename as well as the last name.