Neun may refer to:

• Jörg Neun, a retired German football player
• Johnny Neun, who was an American first baseman for the Detroit Tigers and the Boston Braves
• Manfred Neun, a German entrepreneur
• NeuN, a protein marker of neurons, concentrated in neuronal nuclei

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• Canadian Reform Conservative Alliance Party
• Canadian Reform Party
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• Canadian Republicanism
• Canadian response to Hurricane Katrina
• Canadian rising
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• Canadian River
• Canadian River (disambiguation)
• Canadian River (Platte River)
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• Canadian Rocky Mountain Parks World Heritage Site
• Canadian Rocky Mountains
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• Canadian Scots Gaelic
• Canadian Scottish Gaelic
• Canadian Scottish Regiment