Cognomen 朗斯 (Lans 
, 朗斯 
) , throughout the world, is quite a rare last name. The cognomen 朗斯 is characteristic of Netherlands, where it is quite a common surname, Sweden, where it is quite a rare surname, and Estonia. Measured by absolute frequency, it most frequently occurs in Netherlands, Sweden, and Egypt. Much less frequently, 朗斯 is the forename as well as the last name.