Family name Faaiu (Faaiu 
) , around the world, is a very rare surname. The last name Faaiu is habitual in Australia, where it is a very rare surname, and the United States, where it is an extremely rare surname. Also, Faaiu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Faaiu | New Zealand, United States, Australia |