Last name วัยฤทธิ์ (วัยฤทธิ์ 
) , all around the world, is a very rare surname. The last name วัยฤทธิ์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Likewise, วัยฤทธิ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| วัยฤทธิ์ | Thailand |