Family name Trongtrong (Trongtrong 
) , throughout the world, is a very rare surname. The family name Trongtrong is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname, and Cambodia. Very seldom, Trongtrong is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Trongtrong | Cambodia, Thailand |