Family name Maddei (Maddei 
) , across the world, is a very rare cognomen. The family name Maddei is characteristic of Malaysia, where it is a very rare surname, Germany, and Philippines, where it is an extremely rare surname. Very seldom, Maddei is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Maddei | Germany, Malaysia, Philippines, United States, India |