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Last name Sibert (Siebert
, Sibert
, Сиберт
) , worldwide, is a common cognomen. The last name Sibert is characteristic of Germany, where it is quite a common surname, Namibia, where it is quite a rare surname, and Austria. In absolute terms, it is commonest in Germany, the United States, and France. Very seldom, Sibert is the forename as well as the last name.