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Surname Hais (Hais , Хаис ) , throughout the world, is quite a rare cognomen. The last name Hais is habitual in Czechia, where it is quite a rare surname, Qatar, where it is a rare surname, and France. Measured by absolute frequency, this name is the most popular in Czechia, France, and Indonesia. Very seldom, Hais is the forename as well as the last name.