Cognomen ลอยสี (ลอยสี 
) , around the globe, is a very rare family name. The surname ลอยสี is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, ลอยสี is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ลอยสี | Thailand |