Cognomen สมาชาญ (สมาชาญ 
) , in the world, is an extremely rare surname. The family name สมาชาญ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Also, สมาชาญ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| สมาชาญ | Thailand |