Throughout the world, สายนิตย์ (สายนิตย์ 
) is a very rare dominantly feminine, but seldom boy's first name. The given name สายนิตย์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare mostly female, but uncommonly male name.
| VARIANT | COUNTRY |
|---|---|
| สายนิตย์ | Thailand |