Family name ฤทธิประศาสน์ (ฤทธิประศาสน์ 
) , all over the world, is a very rare surname. The family name ฤทธิประศาสน์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| ฤทธิประศาสน์ | Thailand |
| ชูสง่า ฤทธิประศาสน์ politician, TH (b. 1915) |
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