Family name สร้อยฟ้า (Soyfa 
, Soifa 
, Soifah 
) , worldwide, is a rare cognomen. The surname สร้อยฟ้า is habitual in Thailand, where it is a rare surname, Morocco, where it is a very rare surname, and Switzerland. Measured by absolute frequency, it is commonest in Thailand, Indonesia, and Morocco. More prevalently, สร้อยฟ้า is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Soyfa | India, Laos, United States, Thailand |
| Soifa | Morocco, Switzerland, Thailand, India, France |
| Soifah | Indonesia, United States, Thailand |