Surname พจนพาณิชย์กุล (พจนพาณิชย์กุล 
) , in all the world, is an extremely rare last name. The cognomen พจนพาณิชย์กุล is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| พจนพาณิชย์กุล | Thailand |