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Cognomen Prajongkan (Prajongkan ) , around the world, is a very rare family name. The surname Prajongkan is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Prajongkan | Thailand |
Sutin, Busaya, Prajak, Ketkaew, Pakjira, Phawaree, Pheerajak, Natpakamon, Krisnatouch, Tawichong, Nattakarn, and Krishnatouch