Cognomen Тхуен (Thuen 
, Тхуен 
) , around the globe, is a rare family name. The last name Тхуен is habitual in Northern Europe, particularly Norway, where it is quite a rare surname, Denmark, and Sweden, where it is a rare surname. In absolute terms, the name is most common in Norway, Denmark, and the United States. Much less frequently, Тхуен is the forename as well as the last name.