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Cognomen Sơn (Son , Sơn , ソン ) , globally, is a widespread last name. The surname Sơn is characteristic of Saint Lucia, where it is quite a common surname, Macao, and Vietnam (explore the name in all countries). In absolute terms, this name is the most popular in South-eastern Asia, particularly Vietnam, Myanmar, and Indonesia. Likewise, Sơn is the forename as well as the last name.