Family name Aquinio (Aquinio 
) , in the entire world, is a very rare surname. The surname Aquinio is habitual in Philippines, where it is a very rare surname, Brazil, and Chile, where it is an extremely rare surname. Not in comparison with a country's population, the name is most common in Philippines, Brazil, and the United States. Much less frequently, Aquinio is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Aquinio | Peru, Philippines, Brazil, United States, Mexico |