Cognomen Justo Leonel (Justo Leonel 
) , throughout the world, is an extremely rare last name. The family name Justo Leonel is habitual in Latin America and the Caribbean, particularly Chile, where it is a very rare surname. More frequently, Justo Leonel is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Justo Leonel | Peru, Chile, Ecuador |