Cognomen Чиа (Chia 
, Chya 
, Tchia 
) , globally, is a common family name. The surname Чиа is habitual in South-eastern Asia, particularly Singapore, where it is a common surname, Malaysia, and Brunei, where it is quite a common surname (explore the name in all countries). In absolute terms, it most frequently occurs in Malaysia, Singapore, and Nigeria. Likewise, Чиа is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Chia | Indonesia, Malaysia, Singapore, Nigeria, Cameroon |
| Chya | Indonesia, Malaysia, Nigeria, United States, Iraq |
| Tchia | South Africa, Australia, United States, France, Israel |
| Чиа | Kazakhstan, Russia |