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Cognomen Bangnak (Bangnak ) , across the world, is a very rare last name. The surname Bangnak is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Bangnak | Thailand |
Tara, Pairoa, Natcha, Somchai, Nongluk, Tanongsak, Siriyaporn, and Chonlathip