Last name Леонарду (Leonardo 
, Leonardus 
, Леонарду 
) , all around the world, is a widespread surname. The surname Леонарду is characteristic of Mexico, where it is a common surname, San Marino, and Nicaragua, where it is quite a common surname (explore the name in all countries). Not in comparison with a country's population, it is commonest in Mexico, Argentina, and Indonesia. More prevalently, Леонарду is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Leonardo | Italy, Mexico, Philippines, Brazil, Argentina |
| Leonardus | Italy, Mexico, Indonesia, Philippines, Brazil |
| Леонарду | Russia |
| Leonardou | United States, Greece |