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Last name Singkannjanawongsa (Singkannjanawongsa ) , globally, is a very rare family name. The cognomen Singkannjanawongsa is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Singkannjanawongsa | Thailand |
Sunaowarat, Phongphan, and Juthamard