Last name Ся (Xia 
, Qiuping 
, Sia 
) , across the world, is a prevalent surname. The surname Ся is habitual in Cayman Islands, where it is a common surname, China, where it is quite a common surname, and Malaysia (explore the name in all countries). Not in comparison with a country's population, it is commonest in China, Malaysia, and Philippines. Much less frequently, Ся is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Xia | Indonesia, Philippines, China, Malaysia, United States |
| Qiuping | Indonesia, Spain, China, Malaysia, United States |
| Sia | Indonesia, Philippines, China, Malaysia, Tanzania |
| Ся | Ukraine, China, Russia, Kyrgyzstan, Kazakhstan |