Surname Катру (Catroux 
, Catrou 
, Катру 
) , throughout the world, is quite a rare last name. The surname Катру is habitual in France, where it is quite a rare surname, Spain, where it is a very rare surname, and Ukraine, where it is an extremely rare surname. Not in comparison with a country's population, this name is the most popular in France, the United States, and Spain. Very seldom, Катру is the forename as well as the last name.