Around the globe, ไวยฤทธิ์ (Waiyarit 
, ไวยฤทธิ์ , Wairit ) is a very rare boy's forename. The first name ไวยฤทธิ์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare boy's name. More frequently, ไวยฤทธิ์ is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| ไวยฤทธิ์, Wairit, Waiyarit, Vaiyarit | Thailand |