Family name พิชยสิทธิ์ (พิชยสิทธิ์ 
) , all around the world, is an extremely rare last name. The last name พิชยสิทธิ์ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| พิชยสิทธิ์ | Thailand |