Cognomen Pairoa (Pairoa 
) , in all the world, is a very rare surname. The last name Pairoa is habitual in Chile, where it is a rare surname, Thailand, where it is a very rare surname, and Argentina, where it is an extremely rare surname. Also, Pairoa is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Pairoa | Spain, India, United States, Chile, Thailand |