Angria or Angaria is a historical region in the present-day German states of Lower Saxony and North Rhine-Westphalia. The chronicler Widukind of Corvey in his Res gestae saxonicae sive annalium libri tres denoted it as one of three core regions of the Old Saxony, lying along the middle reaches of the Weser river between two other core regions, Westphalia and Eastphalia, and thus encompassing central parts of the medieval Stem Duchy of Saxony.