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Cognomen Promwas (Promwas ) , in the entire world, is a rare family name. The family name Promwas is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Promwas | Thailand |
Opas, Thanchanok, Pramaha Korakot, Suphawadee, Kanpitcha, Auttakorn, Asamaporn, Aratchamon, Niyanart, Peerawas, Chotisak, Orathai, Jongrug, Rachata, Kedkanda, Kattiya, Charan, Asmaporn, Surpin, Rapin, Pharamaha Korakot, and Phramaha Korakot