Last name เต็งไตรรัตน์ (เต็งไตรรัตน์ 
, Tengtrirat 
) , across the world, is a rare cognomen. The surname เต็งไตรรัตน์ is habitual in Thailand, where it is a rare surname, and the United States, where it is an extremely rare surname. Much less frequently, เต็งไตรรัตน์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| เต็งไตรรัตน์ | Thailand |
| Tengtrirat | United States, Thailand |