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Family name Landais (Landais
, Ландайс
) , across the world, is quite a common last name. The cognomen Landais is habitual in Guadeloupe, where it is quite a common surname, France, and Slovenia, where it is a rare surname. In absolute terms, this name is the most popular in France, Guadeloupe, and the United States. Very seldom, Landais is the forename as well as the last name.