Family name ทรงฤทธิ (ทรงฤทธิ 
) , in all the world, is an extremely rare last name. The family name ทรงฤทธิ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. More frequently, ทรงฤทธิ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ทรงฤทธิ | Thailand |