Family name ธัญศิระวงศ์ธร (ธัญศิระวงศ์ธร 
) , in all the world, is a very rare surname. The family name ธัญศิระวงศ์ธร is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| ธัญศิระวงศ์ธร | Thailand |