Family name Монтанари (Montanari 
, Монтанари 
) , throughout the world, is a common surname. The surname Монтанари is characteristic of Southern Europe, particularly San Marino, where it is a common surname, Italy, where it is quite a common surname, and Malta, where it is quite a rare surname. Measured by absolute frequency, it is commonest in Italy, Brazil, and Argentina. Much less frequently, Монтанари is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Montanari | Brazil, France, Argentina, United States, Italy |
| Монтанари | Russia |