Surname พิธิชัย (พิธิชัย 
) , around the world, is an extremely rare last name. The cognomen พิธิชัย is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Much more frequently, พิธิชัย is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| พิธิชัย | Thailand |