Surname Hernois (Herr 
, Arnese 
, Arnès ) , globally, is a common last name. The family name Hernois is characteristic of Germany, where it is quite a common surname, Luxembourg, where it is quite a rare surname, and Hungary. Not in comparison with a country's population, it most frequently occurs in the United States, Germany, and France. Very seldom, Hernois is the forename as well as the last name.