Surname ธนวิศาล (ธนวิศาล 
, Tanawisan 
) , across the world, is a very rare family name. The cognomen ธนวิศาล is habitual in Thailand, where it is a very rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| ธนวิศาล | Thailand |
| Tanawisan | United States, Thailand |