Cortana (disambiguation)

Cortana may refer to the following:

Halo universe

 * Cortana - The Master Chief ' s AI companion.

Real world

 * Cortana (app) - A smartphone digital assistant developed by Microsoft, based on the eponymous AI.
 * Cortana Letters - A series of cryptic emails sent by Bungie to tease the announcement of Halo: Combat Evolved.
 * Cortana (level) - The ninth Campaign level in Halo 3.
 * Cortana (level)/Walkthrough - A walkthrough for this level written by Halopedia.
 * Cortana moments - Moments during the Halo 3 campaign.
 * Cortana on High Ground - An Easter egg in Halo 3.
 * Cortana Suite - A suite from the Halo 3: Original Soundtrack.