Family name 勒克斯 (Lux 
, 勒克斯, Lūx) , around the globe, is a common last name. The family name 勒克斯 is habitual in Guatemala, where it is a common surname, Luxembourg, and Germany, where it is quite a common surname. In absolute terms, it is the most numerous in Guatemala, Germany, and the United States. Very seldom, 勒克斯 is the forename as well as the last name.