All over the world, สายวงศ์คำ (สายวงศ์คำ, Saivongkham 
, Saiwongkum 
) is an extremely rare unknown gender forename. Much more frequently, สายวงศ์คำ is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Saivongkham | Norway |
| Saiwongkum, Saiwongkhum | Thailand |