Carna may refer to:

Places

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  • Cârna, a commune in Dolj County, Romania
  • Càrna, an island in Loch Sunart on the west coast of Scotland
  • Carna, County Galway, a village in Connemara in the west of Ireland

Other

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  • an ancient Roman deity whose identity became confused with Cardea
  • Carna Botnet, hijacked insecure devices online used to map IPv4 in 2012