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Worldwide, Thongbai (Thongbai
) is a rare dominantly feminine, but seldom male given name. The first name Thongbai is habitual in Thailand, where it is a rare mostly female, but uncommonly masculine name, and the United States, where it is an extremely rare epicene name. Likewise, Thongbai is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Thongbai | Malaysia, Laos, United States, Thailand, Oman |