Last name พฤทธ์ไพสิฐ์ (พฤทธ์ไพสิฐ์ 
) , all over the world, is an extremely rare family name. The cognomen พฤทธ์ไพสิฐ์ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| พฤทธ์ไพสิฐ์ | Thailand |