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Cognomen Rutchaya (รุจยา , Rutchaya
) , in the world, is an extremely rare surname. Much more frequently, Rutchaya is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| รุจยา | Thailand |
| Rutchaya | Thailand, United States |
Ninjan, Lipipun, Pruethipruek, Taweesarn, Pattaranara, and Pattharakositkul