Cognomen Pinnikorn (Pinnikorn 
) , across the world, is a very rare family name. The family name Pinnikorn is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, Pinnikorn is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Pinnikorn | Thailand |
Pichaya, Nutthorn, Chanakit, and Touchchanok