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