Cognomen พิทยายุทธ (พิทยายุทธ 
, Pithayut , Pitayut ) , around the globe, is an extremely rare surname. Predominantly, พิทยายุทธ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| พิทยายุทธ, Pithayut, Pitayut, Pitayud | Thailand |
Phitayut, Phittayut, Phitthayayut, Pitayatut, Pitayuth, Pittayayut, Pittayut, Pittayuth, and Pitthayut