Family name สิรฤทธิ์ (สิรฤทธิ์ 
, Sirarit ) , around the world, is an extremely rare last name. The family name สิรฤทธิ์ is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Likewise, สิรฤทธิ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| สิรฤทธิ์, Sirarit | Thailand |