Cognomen ทรีน (Sin 
, ทรีน 
) , throughout the world, is a widespread family name. The family name ทรีน is habitual in Macao, where it is a common surname, Malaysia, and Myanmar (explore the name in all countries). Not in comparison with a country's population, it is commonest in Myanmar, Malaysia, and India. Very seldom, ทรีน is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sin | Malaysia, Indonesia, India, Hong Kong, Myanmar |
| ทรีน | Thailand |