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