Surname ธีรดิลก (ธีรดิลก 
, Dheeradilok ) , globally, is a very rare last name. The cognomen ธีรดิลก is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| ธีรดิลก, Dheeradilok | Thailand |