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Across the world, Ruengkarn (Ruengkarn ) is an extremely rare unknown gender forename. Much more prevalently, Ruengkarn is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Ruengkarn | Thailand |
Nutparkun, Yodying, Mungkorn, Jariyapporn, Jariyaporn, and Patcharanun