Family name ฤทธิศิรวรา (ฤทธิศิรวรา 
) , around the globe, is an extremely rare surname. The last name ฤทธิศิรวรา is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| ฤทธิศิรวรา | Thailand |