Cognomen Киер (Kier 
, Киер 
, Kiær 
) , throughout the world, is quite a rare surname. The surname Киер is characteristic of Denmark, where it is quite a rare surname, Austria, and Norway, where it is a rare surname. Measured by absolute frequency, the name is most common in the United States, Denmark, and Germany. Likewise, Киер is the forename as well as the last name.