Surname จุลทัย (จุลทัย 
) , all over the world, is a very rare family name. The last name จุลทัย is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Also, จุลทัย is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| จุลทัย | Thailand |