Last name Demien (Demien 
, Дэмиен) , in the entire world, is a rare family name. The surname Demien is characteristic of Lebanon, where it is quite a rare surname, the United States, where it is a very rare surname, and Nigeria. Not in comparison with a country's population, it is the most numerous in the United States, Lebanon, and Indonesia. Much less frequently, Demien is the forename as well as the last name.