Surname พัฒธยา (พัฒธยา 
) , around the globe, is an extremely rare family name. The surname พัฒธยา is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. More prevalently, พัฒธยา is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| พัฒธยา | Thailand |