Last name ไพหาญ (ไพหาญ 
) , worldwide, is a very rare surname. The surname ไพหาญ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, ไพหาญ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ไพหาญ | Thailand |