In the world, เธียนชัย (เธียนชัย 
) is a very rare predominantly boy's, but very seldom feminine first name. The forename เธียนชัย is habitual in South-eastern Asia, particularly Thailand, where it is a very rare principally masculine, but very infrequently girly name.
| VARIANT | COUNTRY |
|---|---|
| เธียนชัย | Thailand |