Last name วิทยาวุฒิ (Wittaya 
, Wittawut , วิทยาวุฒิ ) , around the world, is a rare family name. The surname วิทยาวุฒิ is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname, Myanmar, and Malaysia, where it is an extremely rare surname. In absolute terms, it is the most numerous in Thailand, Myanmar, and China. More frequently, วิทยาวุฒิ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Wittaya | China, Myanmar, Thailand, United Arab Emirates, Taiwan |
| Wittawut, วิทยาวุฒิ, Witthawut | Thailand |
Wittayawut, and Wittayawuth