Family name Ljós (Lys 
, Ljós, Lés) , worldwide, is quite a rare surname. The family name Ljós is habitual in Reunion, where it is quite a common surname, France, where it is quite a rare surname, and Algeria. Not in comparison with a country's population, it is commonest in France, Algeria, and Poland. More frequently, Ljós is the forename as well as the last name.