Surname สยา (Saya 
, สยา 
) , all around the world, is a common family name. The surname สยา is habitual in the Democratic Republic of the Congo, where it is quite a common surname, Gabon, where it is quite a rare surname, and Uruguay. Not in comparison with a country's population, it is commonest in the Democratic Republic of the Congo, India, and Indonesia. Likewise, สยา is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Saya | Myanmar, Democratic Republic of the Congo, Iraq, India, Indonesia |
| สยา | Thailand |