Surname ทองคำแหง (ทองคำแหง, Thongkumhaeng 
, Thongkumheang) , around the world, is an extremely rare family name. The last name ทองคำแหง is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Thongkumhaeng | Thailand |