Surname Niolo (Niolo 
) , in the entire world, is a rare cognomen. The family name Niolo is characteristic of the Democratic Republic of the Congo, where it is a rare surname, Argentina, where it is an extremely rare surname, and Philippines. Very seldom, Niolo is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Niolo | Philippines, Brazil, India, Argentina, Democratic Republic of the Congo |