Lorenzetti is an
Italian surname. Notable people with the surname include:
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Ambrogio Lorenzetti ( 1290–1348), Sienese painter
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Enrico Lorenzetti (1911–1989), Italian motorcycle road racer
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Gustavo Lorenzetti (born 1985), Argentine footballer
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Pietro Lorenzetti ( 1280–1348), Sienese painter, brother of Ambrogio Lorenzetti
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Ricardo Lorenzetti (born 1955), Argentine judge
