Surname ฟ้าประทาน (Faisorn 
, Blue Sky 
, Fhaprathan ) , globally, is an extremely rare family name. The surname ฟ้าประทาน is characteristic of Northern America, particularly the United States, where it is an extremely rare surname. More frequently, ฟ้าประทาน is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Fhaprathan, Faisorn | Thailand |
| Blue Sky | Ecuador, United States, Philippines |
Faphakwaen, Fapratan, and Faprathan