Cognomen ไตรยุทธ (ไตรยุทธ 
, Triyut ) , across the world, is a rare family name. The surname ไตรยุทธ is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Very seldom, ไตรยุทธ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Triyut, ไตรยุทธ | Thailand |