Last name ルドン (Redon 
, ルドン) , throughout the world, is quite a common cognomen. The cognomen ルドン is characteristic of France, where it is quite a common surname, Uruguay, where it is quite a rare surname, and Spain. Not in comparison with a country's population, it is commonest in France, Spain, and Philippines. Very seldom, ルドン is the forename as well as the last name.