Cognomen ธนะโรจน์วรกุล (ธนะโรจน์วรกุล 
) , all over the world, is an extremely rare surname. The last name ธนะโรจน์วรกุล is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| ธนะโรจน์วรกุล | Thailand |