Cognomen Jadanza (Jadanza 
) , throughout the world, is a very rare family name. The surname Jadanza is characteristic of Italy, where it is a very rare surname, and the United States, where it is an extremely rare surname. Much less frequently, Jadanza is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Jadanza | United States, Italy |
|
nicodemo jadanza geodesist, cartographer and topographer (1847-1920), IT (b. 1847) |
|
| franco jadanza Italian singer, IT (b. 1946) |
|