Cognomen เทียนฤทัย (เทียนฤทัย 
) , across the world, is an extremely rare family name. The surname เทียนฤทัย is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. More prevalently, เทียนฤทัย is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| เทียนฤทัย | Thailand |