Cognomen Trungthanh (Trungthanh 
) , around the world, is a very rare surname. The surname Trungthanh is characteristic of South-eastern Asia, particularly Vietnam, where it is a very rare surname. More prevalently, Trungthanh is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Trungthanh | Vietnam |
Trungthành, Трунгтханх, and Ｔｒｕｎｇｔｈａｎｈ