Last name Thongkhu (Thongkhu 
) , across the world, is a very rare family name. The family name Thongkhu is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Thongkhu | Thailand |
Yotsak, Sompong, Apichat, Wimonrat, and Thipphawan