The Angevin Empire is a term applied to the lands of Henry II of England, consisting of at their largest extent, the Kingdom of England and duchies / counties of Normandy, Anjou, Poitou, Maine, Gascony, Touraine, Béarn and Aquitaine; with Brittany, Wales, Toulouse, Scotland and Ireland held in vassalage to some degree.

It should be noted that this term is not contemporary, and has only come into common usage during the century to reflect changing attitudes towards the time, moving away from an Imperialist view of English domination towards a perpective of mutual influence.

At other times during history Angevin dynasties have ruled Hungary, Naples, France and Poland, however these are not related to the Angevin dynasty of England.

The hypothetical continuation and expansion of the Angevin Empire over several centuries has been the subject of several tales of Alternative history.