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Last name Thianthai (เธียรไท , Thianthai
) , globally, is a very rare surname. The cognomen Thianthai is characteristic of Thailand, where it is a very rare surname, and the United States, where it is an extremely rare surname. More frequently, Thianthai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| เธียรไท | Thailand |
| Thianthai | United States, Thailand |