Surname วิทยายุทธ (วิทยายุทธ 
, Vittayut , Vittayayut ) , around the world, is a very rare cognomen. The surname วิทยายุทธ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. More prevalently, วิทยายุทธ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Vittayut, Vittayayut, วิทยายุทธ | Thailand |
Witayarut, Witayaruth, Wittayarut, Wittayayoot, Wittayayut, Wittayoot, Wittayut, Witthayarut, and Witthayut