Geldungur (Icelandic pronunciation: [ˈcɛltuŋkʏr̥] ^ⓘ) is a small, uninhabited island in the Vestmann Islands, south of Iceland.

63°20′6.16″N 20°24′5.52″W / 63.3350444°N 20.4015333°W / 63.3350444; -20.4015333