Family name เก้าไพบูลย์ (เก้าไพบูลย์, Ninpiboon 
) , around the globe, is a very rare surname. The cognomen เก้าไพบูลย์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Ninpiboon | Thailand |