In the world, สายวรรณ (Saiwan 
, สายวรรณ ) is quite a rare primarily masculine, but very infrequently female first name. The given name สายวรรณ is habitual in Iraq, where it is quite a rare predominantly male, but scarcely feminine name, Thailand, where it is a very rare dominantly feminine, but uncommonly male name, and Iran, where it is a very rare male name. Not in comparison with a country's population, it is commonest in Iraq, India, and Pakistan. Much less frequently, สายวรรณ is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Saiwan | Myanmar, Iraq, India, Pakistan, Thailand |
| สายวรรณ | Thailand |