Cognomen ไวยาวุฒิ (ไวยาวุฒิ 
, Vaiyavut 
) , around the world, is a very rare last name. The family name ไวยาวุฒิ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Also, ไวยาวุฒิ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ไวยาวุฒิ | Thailand |
| Vaiyavut | United States, Thailand |
คณิตปัญญาเจริญ, ปัณฑรนนทกะ, and อุปการะ