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