Surname ดายา (Daya 
, ดายา 
) , all over the world, is a common family name. The cognomen ดายา is habitual in Lesotho, where it is quite a common surname, Lebanon, where it is quite a rare surname, and Zambia. Not in comparison with a country's population, it is commonest in India, Indonesia, and Philippines. More frequently, ดายา is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Daya | Philippines, Iraq, India, Indonesia, Sri Lanka |
| ดายา | Thailand |