Family name ยงชัยชาญ (ยงชัยชาญ 
, Yongchaichan ) , in the entire world, is a very rare last name. The cognomen ยงชัยชาญ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Yongchaichan, ยงชัยชาญ | Thailand |