Cognomen คงธนชาญโรจน์ (คงธนชาญโรจน์ 
) , across the world, is an extremely rare surname. The cognomen คงธนชาญโรจน์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| คงธนชาญโรจน์ | Thailand |