In the entire world, Gian Vittorio (Gian Vittorio 
) is a very rare masculine first name. The first name Gian Vittorio is characteristic of Southern Europe, particularly Italy, where it is a very rare male name.
| VARIANT | COUNTRY |
|---|---|
| Gian Vittorio | Italy, Philippines |
| gian vittorio rossi Italian philologist and writer, IT (b. 1577) |
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| gian vittorio baldi Italian film director, IT (b. 1930) |
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| gian vittorio martello botanist |
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