Cognomen วัชฤทธิ์ (วัชฤทธิ์ 
) , throughout the world, is a rare family name. The cognomen วัชฤทธิ์ is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Also, วัชฤทธิ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| วัชฤทธิ์ | Thailand |