Cognomen Guarna (Guarna 
) , in all the world, is quite a rare surname. The family name Guarna is habitual in Italy, where it is quite a rare surname, Argentina, where it is a rare surname, and Canada, where it is a very rare surname. In absolute terms, the name is most common in Italy, Argentina, and the United States. Very seldom, Guarna is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Guarna | Canada, Italy, Australia, United States, Argentina |
| romualdo guarna Italian archbishop, IT (b. 1115) |
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| rebecca guarna Italian physician, IT (b. 1250) |
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| andrea guarna Italian philologist, IT (b. 1401) |
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saverio guarna Italian cinematographer, IT (b. 1956) |
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| vincenzo guarna Italian writer, IT (b. 1934) |
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| tom guarna US (b. 1950) |
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| romualdo i guarna Italian cardinal, IT |
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| salvatore guarna politician |
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| maria marta guarna researcher (ORCID 0000-0002-4638-9475) |
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| enrico guarna Italian footballer, IT (b. 1985) |
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| nicola matteo guarna |
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| giacomaccio guarna |
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| paulu guarna |
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