Surname แจงจิรวัฒน์ (แจงจิรวัฒน์ 
) , all over the world, is a very rare family name. The cognomen แจงจิรวัฒน์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| แจงจิรวัฒน์ | Thailand |