Cognomen มัธยา (มัธยา 
, Mathaya 
) , in the entire world, is a very rare surname. The surname มัธยา is characteristic of Thailand, where it is a very rare surname, India, where it is an extremely rare surname, and the United States. More prevalently, มัธยา is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| มัธยา | Thailand |
| Mathaya | United States, Thailand, India |