Throughout the world, 西斯 (Sies 
, Seath 
, 西斯 
) is quite a common gender-neutral first name. The first name 西斯 is characteristic of India, where it is a rare gender-neutral name, Belgium, where it is a rare boy's name, and Saudi Arabia, where it is a very rare masculine name. In absolute terms, the name is most common in India, Indonesia, and Saudi Arabia. Also, 西斯 is the last name as well as the forename.