Surname Konstans (Constans 
, Konstans 
, Констанс 
) , in all the world, is quite a rare last name. The surname Konstans is habitual in France, where it is quite a rare surname, Spain, where it is a rare surname, and Switzerland. Measured by absolute frequency, it most frequently occurs in France, the United States, and Spain. Much less frequently, Konstans is the forename as well as the last name.