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Throughout the world, Ruethaikarn (Ruethaikarn ) is an extremely rare unknown gender given name. Much less frequently, Ruethaikarn is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Ruethaikarn | Thailand |
Kaito, Phansa, Jansuk, Nitkhamharn, Punpongpipat, Horprasertkij, Watcharamekkhala, and Sukontapatipak