>
Family name Sier (Sier , Сир , 西尔 ) , around the globe, is quite a rare surname. The last name Sier is characteristic of Netherlands, where it is quite a rare surname, Australia, where it is a rare surname, and Malaysia. In absolute terms, it is the most numerous in Netherlands, the United States, and Germany. Also, Sier is the forename as well as the last name.