Surname พนาธร (Panatorn 
, พนาธร , Phanatorn ) , all over the world, is a very rare cognomen. The cognomen พนาธร is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. More frequently, พนาธร is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Phanatorn, Panatorn, พนาธร, Phanadorn | Thailand |
Phanandorn, Phanathon, Phanathorn, Phannathon, and Phannathorn