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Family name Karnjaporn (Karnjaporn ) , across the world, is an extremely rare last name. Much more frequently, Karnjaporn is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Karnjaporn | Thailand |
Jittithavorn, Jittithaworn, Kittiampanont, and Jangwattanaphong