Family name ฤทธิสุวรรณ์ (ฤทธิสุวรรณ์ 
) , throughout the world, is an extremely rare cognomen. The family name ฤทธิสุวรรณ์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| ฤทธิสุวรรณ์ | Thailand |