Surname Tousen (Tousen 
, Тусен 
) , in the entire world, is a very rare last name. The last name Tousen is habitual in the Dominican Republic, where it is a rare surname, Venezuela, where it is a very rare surname, and South Africa. In absolute terms, the name is most common in the Dominican Republic, Thailand, and South Africa. Also, Tousen is the forename as well as the last name.