Cognomen Giangiulio (Giangiulio 
) , across the world, is quite a rare surname. The last name Giangiulio is characteristic of Italy, where it is a rare surname, Costa Rica, and Australia. Not in comparison with a country's population, it most frequently occurs in Italy, the United States, and Brazil. Much less frequently, Giangiulio is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Giangiulio | Italy, Australia, United States, Argentina, Brazil |
| richard giangiulio American musician, US (b. 1942) |
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| maurizio giangiulio Italian historian of antiquity (1957-), IT (b. 1957) |
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| nicholas j. giangiulio actor |
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