Family name Triyawanich (Triyawanich 
) , in the world, is a very rare last name. The family name Triyawanich is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Triyawanich | Thailand |
Siriluk, Titaree, Warunee, Neeranuch, and Nattayanee