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Last name Jamnongsak (Jamnongsak ) , in the world, is an extremely rare cognomen. The last name Jamnongsak is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. More frequently, Jamnongsak is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Jamnongsak | Thailand |
Tasuwan, Silachai, and Lohakittisakul