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Last name Supangphao (Supangphao ) , in all the world, is a rare family name. The cognomen Supangphao is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Supangphao | Thailand |
Arkom, Phakin, Ravipa, Rapatsorn, Teerachet, Phattranit, and Thanthakorn