Last name ルソー (Rousseau 
, Rousseaux 
, Russow 
) , all around the world, is a common family name. The last name ルソー is habitual in France, where it is quite a common surname, Guadeloupe, and Seychelles (explore the name in all countries). In absolute terms, it most frequently occurs in France, Canada, and the United States. Much less frequently, ルソー is the forename as well as the last name.