Family name 西志 (Xizhi 
, 西志 ) , in all the world, is a rare last name. The family name 西志 is characteristic of China, where it is a very rare surname, Indonesia, and Chile, where it is an extremely rare surname. Measured by absolute frequency, it is commonest in China, Indonesia, and the United States. More frequently, 西志 is the forename as well as the last name.