Authie (French: [oti] ⓘ) is a commune in the Calvados department in the Normandy region of north-western France.

There are also the hamlets of Hameau de Saint-Louet, Franqueville, Fermie du Calvaire, and Cussy in the commune.

[6] According to René Lepelley this toponym is based on the pre-Celtic element alt in an unknown sense and is close to Authou in Pont-Authou.

[8] The Gallic term Attegia was recognized by Xavier Delamarre in Atheist-type names - e.g. Athis in the sense of "cabin or hut".

List of Successive Mayors[12] Authie has twinning associations with:[13] The inhabitants of the commune are known as Althavillais or Althavillaises in French.