Cognomen ถวิลกาล (ถวิลกาล 
) , worldwide, is an extremely rare last name. The last name ถวิลกาล is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Likewise, ถวิลกาล is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ถวิลกาล | Thailand |