Family name วิโรจน์ธนะชัย (วิโรจน์ธนะชัย 
) , in all the world, is a very rare cognomen. The surname วิโรจน์ธนะชัย is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| วิโรจน์ธนะชัย | Thailand |