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Surname Clavier (Clavier , Clavis , Klaver ) , all around the world, is a common cognomen. The surname Clavier is characteristic of Portugal, where it is quite a common surname, Reunion, and Netherlands (explore the name in all countries). Not in comparison with a country's population, it is commonest in France, Brazil, and Netherlands. Much less frequently, Clavier is the forename as well as the last name.