Milesia, Milesian, Milesians, or Miletans may refer to:
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Milesians (Irish), a people figuring in Irish mythology
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Milesians (Greek), the inhabitants of Miletus, a city in the Anatolia province of modern-day Turkey
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Milesian school, a school of thought founded in the 6th century BC and exemplified by three philosophers from Miletus
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Milesian tale, a genre of salacious or exotic narrative
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''Milesia'' (fly), a genus of very large hoverflies
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