Surname ธนชาญ (ธนชาญ 
) , around the world, is an extremely rare last name. The last name ธนชาญ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. More frequently, ธนชาญ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ธนชาญ | Thailand |
Thanachan, and Thoncharurn