Cognomen Thanh Trà (Thanh Trà 
) , worldwide, is a very rare surname. The cognomen Thanh Trà is habitual in South-eastern Asia, particularly Vietnam, where it is a very rare surname. Very seldom, Thanh Trà is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Thanh Trà | Vietnam |