Family name Pirah (Pirah 
) , in the entire world, is a rare cognomen. The cognomen Pirah is characteristic of Papua New Guinea, where it is quite a rare surname, Nigeria, where it is a very rare surname, and Malaysia. Measured by absolute frequency, it is commonest in Papua New Guinea, Nigeria, and Indonesia. Also, Pirah is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Pirah | Pakistan, India, Indonesia, Papua New Guinea, Nigeria |