Last name สกุลทัย (สกุลทัย 
) , in the world, is an extremely rare cognomen. The family name สกุลทัย is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Likewise, สกุลทัย is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| สกุลทัย | Thailand |