Cognomen พันฤทธิ์ (พันฤทธิ์ 
, Panrit 
) , in the entire world, is a rare family name. The cognomen พันฤทธิ์ is characteristic of Thailand, where it is a rare surname, India, where it is a very rare surname, and the United States, where it is an extremely rare surname. Likewise, พันฤทธิ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| พันฤทธิ์ | Thailand |
| Panrit | United States, Thailand, India |