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Surname Royer (Royer , 罗耶 , Ройер ) , in the world, is a common last name. The last name Royer is habitual in Dominica, where it is a common surname, France, where it is quite a common surname, and Monaco (explore the name in all countries). Not in comparison with a country's population, this name is the most popular in France, the United States, and Canada. Much less frequently, Royer is the forename as well as the last name.