Last name ไววัฒน์ (ไววัฒน์ 
, Waiwat 
) , throughout the world, is an extremely rare family name. The last name ไววัฒน์ is characteristic of Thailand, where it is a very rare surname, and the United States, where it is an extremely rare surname. More prevalently, ไววัฒน์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ไววัฒน์ | Thailand |
| Waiwat | United States, Thailand |