Surname Couchier (Kusch 
, Couch , Couchier ) , all around the world, is a common cognomen. The last name Couchier is habitual in Belize, where it is quite a common surname, the United States, where it is quite a rare surname, and Montenegro. Not in comparison with a country's population, it is commonest in the United States, Germany, and the United Kingdom. Very seldom, Couchier is the forename as well as the last name.