Surname พรพจนีย์ (พรพจนีย์ 
, Pornpotchanee , Pornphojjanee 
) , in all the world, is a very rare family name. The last name พรพจนีย์ is habitual in Thailand, where it is a very rare surname, and the United States, where it is an extremely rare surname. Much less frequently, พรพจนีย์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Pornpotchanee, พรพจนีย์ | Thailand |
| Pornphojjanee | United States, Thailand |