Family name Gianzi (Gianzi 
) , around the globe, is a very rare last name. The last name Gianzi is characteristic of Italy, where it is a very rare surname, Georgia, and Argentina. In absolute terms, it most frequently occurs in Italy, Argentina, and Germany. Very seldom, Gianzi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gianzi | Germany, Italy, Peru, Argentina, Brazil |