Family name Allegretti (Allegretti 
) , in the entire world, is quite a common surname. The cognomen Allegretti is habitual in Paraguay, where it is quite a common surname, Italy, where it is quite a rare surname, and Argentina. Much less frequently, Allegretti is the forename as well as the last name.
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| Allegretti | Paraguay, Brazil, Italy, United States, Argentina |
| mazzone allegretti IT (b. 1070) |
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| giacomo allegretti Italian physician, IT (b. 1325) |
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| allegretto allegretti Italian politician (1429-1497), IT (b. 1429) |
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| carlo allegretti Italian painter, IT (b. 1600) |
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| antonio allegretti Italian sculptor (1840-1918), IT (b. 1840) |
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| antonio allegretti theater actor, IT (b. 1840) |
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mario allegretti Italian partisan, IT (b. 1919) |
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sandro allegretti Italian painter, IT (b. 1938) |
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| derville allegretti Brazilian journalist, BR (b. 1900) |
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| corrado allegretti (b. 1894) |
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| nikša allegretti (b. 1920) |
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marco allegretti Italian basketball player, IT (b. 1981) |
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| umberto allegretti Italian jurist (1934-), IT (b. 1934) |
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| girolamo allegretti Italian economic historian (1934-), IT (b. 1934) |
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| cosmo allegretti (b. 1927) |
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