Surname Кузен (Cousin 
, Кузен 
) , across the world, is a common cognomen. The last name Кузен is habitual in Guadeloupe, where it is quite a common surname, France, and Malta. Not in comparison with a country's population, it is the most numerous in France, the United States, and Belgium. Much less frequently, Кузен is the forename as well as the last name.