Last name Tiya (Tiya 
, Thia 
, Tía 
) , throughout the world, is a common surname. The cognomen Tiya is characteristic of Singapore, where it is quite a common surname, India, where it is quite a rare surname, and Mauritius. Measured by absolute frequency, the name is most common in India, Indonesia, and Singapore. Also, Tiya is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Tiya | Singapore, Malaysia, India, Ethiopia, Indonesia |
| Thia | Singapore, Myanmar, Malaysia, India, Indonesia |
| Tía | El Salvador, Spain, France, Vietnam, United States |