Last name Fonci (Fonci 
) , in the entire world, is a very rare surname. The cognomen Fonci is habitual in Myanmar, where it is a very rare surname, France, and Italy, where it is an extremely rare surname. Very seldom, Fonci is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Fonci | South Africa, Italy, Myanmar, United States, France |