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Surname Pruvost (Pruvost ) , all around the world, is a common family name. The surname Pruvost is habitual in Western Europe, particularly France, where it is quite a common surname, Belgium, where it is a rare surname, and Switzerland. Measured by absolute frequency, this name is the most popular in France, Argentina, and Sri Lanka. Much less frequently, Pruvost is the forename as well as the last name.