Surname เซี่ย (Sia 
, เซี่ย) , across the world, is a common last name. The cognomen เซี่ย is habitual in Malaysia, where it is quite a common surname, Brunei, and Cayman Islands (explore the name in all countries). Measured by absolute frequency, this name is the most popular in South-eastern Asia, particularly Malaysia, Philippines, and Indonesia. Likewise, เซี่ย is the forename as well as the last name.