Austfonna is an ice cap located on Nordaustlandet in the Svalbard archipelago in Norway.

The ice dome reaches an elevation of 783 meters above sea level.

[4] Vegafonna ice cap in the southwest is also connected to Austfonna proper, specifically to Sørfonna, and is separated from it by Erica Valley.

Immediately west of Vegafonna is Glittne ice cap,[4] which is considered part of the former.

[citation needed] Vestfonna in the northwest of the island is a totally separate ice cap (the third largest of Svalbard and Norway).