Family name Numpinij (Numpinij 
) , worldwide, is an extremely rare last name. The cognomen Numpinij is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Numpinij | Thailand |
Faem, Rabiab, Nantanat, and Kitsanachai