Last name ثير (Thure 
, Thyre 
, ثير 
) , throughout the world, is quite a rare cognomen. The last name ثير is characteristic of Austria, where it is quite a rare surname, Finland, and Kenya, where it is a rare surname. Measured by absolute frequency, it is commonest in Kenya, Indonesia, and Myanmar. Likewise, ثير is the forename as well as the last name.