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 | China, Philippines, Indonesia, United States, Malaysia |
| Qiuping | China, Indonesia, United States, Malaysia, Spain |
| Sia | China, Tanzania, Philippines, Indonesia, Malaysia |
| Ся | Kazakhstan, China, Kyrgyzstan, Ukraine, Russia |