Family name สายทองคำ (สายทองคำ, Gold Line, Saitongkum 
) , around the world, is a very rare last name. The last name สายทองคำ is characteristic of Thailand, where it is a rare surname, and New Zealand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Saitongkum | Thailand |
| Saithongkum | New Zealand, Thailand |