Cognomen Siffo (Siffo 
) , all over the world, is a rare family name. The surname Siffo is characteristic of Argentina, where it is a rare surname, and Algeria, where it is a very rare surname. Likewise, Siffo is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Siffo | India, Algeria, United States, Argentina |