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Family name Rongdej (Rongdej ) , around the globe, is a rare last name. The cognomen Rongdej is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Rongdej | Thailand |
Anwa, Choke, Somkid, Muntana, Sathorn, Janjira, Mathukorn, Siddhiporn, Kraingkai, Pichetchai, and Annapurana