Surname สายสิน (สายสิน 
, Saisin 
) , globally, is quite a rare last name. The cognomen สายสิน is characteristic of South-eastern Asia, particularly Thailand, where it is quite a rare surname, Singapore, where it is a rare surname, and Indonesia, where it is a very rare surname. Much less frequently, สายสิน is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| สายสิน | Thailand |
| Saisin | Thailand, Indonesia, India, United States, Singapore |