Cortana

Cortana may refer to:


 * Cortana (gastropod), a gastropod genus
 * Cortana (Halo), character in the Halo franchise
 * Cortana (virtual assistant), virtual assistant from Microsoft
 * Cortana, or Curtana, a ceremonial sword used in the coronation of British monarchs
 * Cortain, or Curtana, the sword wielded by Ogier the Dane, Paladin of Charlemagne