Last name พินใจ (พินใจ 
, Pinjai 
) , globally, is a rare cognomen. The family name พินใจ is characteristic of Thailand, where it is quite a rare surname, India, where it is an extremely rare surname, and the United States. Much less frequently, พินใจ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| พินใจ | Thailand |
| Pinjai | United States, Thailand, India |