Öræfasveit or Öræfi (previously called Litlahérað) is a western region in Austur-Skaftafellssýsla, between Breiðamerkursandur and the river Skeiðará, east of the village Kirkjubæjarklaustur and south of the volcano Öræfajökull. In the Middle Ages, this region was called Hérað or Litlahérað, but was deserted in the wake of the 1362 eruption of Öræfajökull and the subsequent flooding of the region. After these events the region was simply called Öræfi ("wilderness").
For a long time, the region was very isolated since two large waterfalls hindered the pathway from both from the east and west. This isolation continued until Jökulsá á Breiðamerkursandi bridged the gap in 1967 and Skeiðarárbrúin was opened in 1974 with the Ring Road.
Skaftafell National Park is located in Öræfasveit and was established in 1967.