Surname วิทยวัฒน์ (Withawat 
, Wittavat , วิทยวัฒน์ ) , across the world, is an extremely rare family name. The surname วิทยวัฒน์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Much more frequently, วิทยวัฒน์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Withawat | United States, Thailand |
| Wittiwat, วิทยวัฒน์, Wittavat | Thailand |