Family name Gagna (Gagna 
, Gavne 
) , in the world, is a rare cognomen. The surname Gagna is habitual in Hungary, where it is a rare surname, Argentina, and Italy. Also, Gagna is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gagna | Italy, Hungary, Senegal, India, Argentina |
| Gavne | India, United States |
| gaspare giuseppe gagna (b. 1686) |
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| francesco gagna IT (b. 1798) |
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| gerald gagna researcher (ORCID 0000-0001-9461-1360) |
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