Family name 西明 (Ximing 
, 西明 , Siemien 
) , worldwide, is quite a rare last name. The last name 西明 is habitual in Hong Kong, where it is a rare surname, China, where it is a very rare surname, and Singapore. Measured by absolute frequency, this name is the most popular in China, Indonesia, and Hong Kong. Much more frequently, 西明 is the forename as well as the last name.