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Family name Vadi (Vadi
, Waten
, วาดี
) , worldwide, is a common cognomen. The cognomen Vadi is habitual in Namibia, where it is quite a common surname, Estonia, where it is quite a rare surname, and Switzerland. Not in comparison with a country's population, it most frequently occurs in India, Namibia, and Turkey. Much less frequently, Vadi is the forename as well as the last name.