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Surname Pongsitthisak (Pongsitthisak ) , throughout the world, is a very rare cognomen. The cognomen Pongsitthisak is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Pongsitthisak | Thailand |
Tnant, Atirut, Mongkon, and Watcharaphun