Cognomen De Gemmis (De Gemmis 
) , worldwide, is a rare surname. The surname De Gemmis is characteristic of Italy, where it is a rare surname, Argentina, where it is a very rare surname, and France.
| VARIANT | COUNTRY |
|---|---|
| De Gemmis | Italy, Argentina, France, United States |
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giuseppe de gemmis Italian magistrate, IT (b. 1734) |
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gioacchino de gemmis IT (b. 1746) |
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nicola de gemmis IT (b. 1818) |
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| michele de gemmis Italian magistrate and writer, IT (b. 1799) |
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| gennaro de gemmis Italian engineer, agronomist and bibliographer (1904-1963), IT (b. 1904) |
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