Family name Tongsawai (Tongsawai 
) , worldwide, is a very rare cognomen. The family name Tongsawai is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Tongsawai | Thailand |
Kobbun, Panuwat, Pattamas, Saranyaras, and Kotchakorn