Cognomen Sifau (Sifau 
) , worldwide, is quite a rare family name. The cognomen Sifau is characteristic of Nigeria, where it is quite a rare surname, and Malaysia, where it is a very rare surname. Likewise, Sifau is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sifau | Nigeria, United States, Malaysia |