Family name Muaulu-Sia (Muaulu-Sia 
) , around the world, is an extremely rare surname. Predominantly, Muaulu-Sia is the forename as well as the last name. Parts of the name also exists independently as a last name Muaulu, and a last name Sia.
| VARIANT | COUNTRY |
|---|---|
| Muaulu-Sia | United States |