Cognomen ชาญชัยปิยะวงศ์ (ชาญชัยปิยะวงศ์ 
) , throughout the world, is an extremely rare family name. The last name ชาญชัยปิยะวงศ์ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| ชาญชัยปิยะวงศ์ | Thailand |