Surname Thanh Nga (Thanh Nga 
) , in all the world, is a rare last name. The last name Thanh Nga is characteristic of South-eastern Asia, particularly Vietnam, where it is a rare surname, and Thailand, where it is an extremely rare surname. Likewise, Thanh Nga is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Thanh Nga | Japan, Vietnam, Thailand, United States, Canada |