Cognomen ประสิทธิ์ภิญโญ (ประสิทธิ์ภิญโญ 
) , throughout the world, is a very rare surname. The cognomen ประสิทธิ์ภิญโญ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| ประสิทธิ์ภิญโญ | Thailand |