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Cognomen Thammasar (Thammasar ) , in the entire world, is a very rare last name. The family name Thammasar is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Thammasar | Thailand |
Komvut, Suteera, Kanyapat, and Theerasith