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Cognomen Kumngam (Kumngam ) , around the world, is a rare family name. The surname Kumngam is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kumngam | Thailand |
Anong, Achara, Nakarin, Onrumpha, Surachet, Jiraporn, Teeradon, Issariya, Bunjarutmaneda, Narongsak, Thatchanan, and Pattanapaporn