Family name Куртуа (Courtois 
, Куртуа 
) , around the world, is a common last name. The family name Куртуа is characteristic of Western Europe, particularly France, where it is quite a common surname, Belgium, and Luxembourg, where it is quite a rare surname. In absolute terms, it is the most numerous in France, Belgium, and the United States. Much less frequently, Куртуа is the forename as well as the last name.