Surname Thiean (เทียน 
, Thiean ) , around the globe, is a very rare family name. The family name Thiean is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Much more prevalently, Thiean is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Thiean, เทียน | Thailand |