Family name Thongkhae (Thongkhae 
) , throughout the world, is an extremely rare surname. The family name Thongkhae is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Very seldom, Thongkhae is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Thongkhae | United States, Thailand |