Last name ป้อมประสิทธิ์ (ป้อมประสิทธิ์, Pompasit 
) , around the globe, is a very rare cognomen. The family name ป้อมประสิทธิ์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Pompasit | Thailand |