Longdon is a surname. Notable people with the surname include:
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Albert Longdon (1865–1937), English cricketer
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Anthony Longdon, Grenadian boxer
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Darryl Longdon (born 2000), American soccer player
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David Longdon (born 1965), British musician
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Jennifer Longdon, American politician
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Terence Longdon (1922–2011), English actor
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