Cognomen Triyangkoolsri (Triyangkoolsri 
) , in the world, is an extremely rare family name. The family name Triyangkoolsri is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Triyangkoolsri | Thailand |
Jirachya, Jarasphon, Jirapinya, and Chomphunut