Plessy is a surname. Notable people with the surname include:
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Homer Plessy (1858, 1862 or 1863 – 1925), American shoemaker and activist
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Jeanne Arnould-Plessy (1819–1897), French actress
See also
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Plessey
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''Plessy v. Ferguson'', U.S. Supreme Court Case, argued by Homer
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