Surname Richaya (Richaya 
) , in the entire world, is an extremely rare last name. Much more prevalently, Richaya is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Richaya | United States, India, Thailand |
Gage, Hadi, Ramsoender, Shrestha, Intavira, Singleton, and Surasanpreedee