Around the world, Opilio (Opilio 
) is a very rare male first name. The first name Opilio is habitual in Italy, where it is a very rare boy's name, and Brazil, where it is an extremely rare principally male, but scarcely feminine name. Very seldom, Opilio is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Opilio | Brazil, India, Italy, Ecuador, United States |
| opilio faimali IT (b. 1824) |
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| opilio rossi Catholic cardinal, US (b. 1910) |
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| opilio IT |
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