Cognomen ยงค์ชัย (ยงค์ชัย 
) , across the world, is a very rare family name. The surname ยงค์ชัย is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. More frequently, ยงค์ชัย is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ยงค์ชัย | Thailand |