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Surname Ratthikarn (รัตติการณ์ , Ratthikarn
) , around the world, is an extremely rare last name. Much more frequently, Ratthikarn is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| รัตติการณ์, Ratthikarn | Thailand |
Khamkaewwandee, Luangchai, and Thongsopa