Last name Ройер (Royer 
, Rojer , Ройер 
) , throughout the world, is a common family name. The family name Ройер is habitual in Dominica, where it is a common surname, Curacao, and France, where it is quite a common surname (explore the name in all countries). In absolute terms, the name is most common in France, the United States, and Canada. Much less frequently, Ройер is the forename as well as the last name.