Last name Кастанье (Castanier 
, Кастанье 
) , in the entire world, is quite a rare surname. The cognomen Кастанье is characteristic of France, where it is quite a rare surname, New Zealand, where it is a rare surname, and Belgium. Not in comparison with a country's population, this name is the most popular in France, the United States, and Canada. Very seldom, Кастанье is the forename as well as the last name.