Flatt is a surname, and may refer to:
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Bruce Flatt (born 1965), Canadian businessman
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Ernie Flatt (1918–1995), American choreographer and dancer
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Johann Friedrich Flatt (1759–1821), German theologian and philosopher
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John Ira Flatt (1834–1913), Canadian farmer, merchant and politician
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Jonathan Flatt (born 1994), English footballer
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Lester Flatt (1914–1979), American bluegrass musician, guitarist and mandolinist
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Matthew Flatt, American computer scientist
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Rachael Flatt (born 1992), American figure skater
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Roy Flatt (1947–2011), English clergyman
See also
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Flatt (landform), a heathland pond, typical of North Germany
