Last name แสงทัย (แสงทัย 
) , all around the world, is a very rare cognomen. The family name แสงทัย is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. More prevalently, แสงทัย is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| แสงทัย | Thailand |