Cognomen Tangruen (Tangruen 
) , in the entire world, is a very rare family name. The last name Tangruen is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Tangruen | Thailand |
Autchara, Kannapas, Korntikarn, Woraphan, and Patcharapon