Family name Thiwai (Thiwai 
) , in all the world, is a very rare cognomen. The cognomen Thiwai is habitual in South-eastern Asia, particularly Myanmar, where it is a rare surname, and Thailand, where it is an extremely rare surname. Also, Thiwai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Thiwai | Myanmar, Thailand |