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Cognomen Couteau (Kutu
, Kouto
, Couteau
) , across the world, is quite a common last name. The surname Couteau is characteristic of France, where it is quite a rare surname, South Africa, and Nepal. Not in comparison with a country's population, this name is the most popular in France, South Africa, and Turkey. Likewise, Couteau is the forename as well as the last name.