Family name Ліер (Lier 
, Ліер 
) , all over the world, is quite a common last name. The cognomen Ліер is habitual in Norway, where it is quite a common surname, Netherlands, and Belgium, where it is quite a rare surname. Not in comparison with a country's population, this name is the most popular in Netherlands, Germany, and Norway. Very seldom, Ліер is the forename as well as the last name.