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Surname Leclercq (Leclercq , Леклерк ) , in the entire world, is a common family name. The last name Leclercq is habitual in Western Europe, particularly Belgium, where it is quite a common surname, France, and Monaco (explore the name in all countries). Measured by absolute frequency, this name is the most popular in France, Belgium, and the United States. Much less frequently, Leclercq is the forename as well as the last name.