Geopora arenicola is a species of fungus belonging to the family Pyronemataceae. It is an uncommon European species. The fungus forms a rounded ascocarp underground on sandy loam soils. This fruit body remains subterranean for most of the year but breaks the surface in the spring to form a cream-coloured cup (apothecium) up to 3 cm (1.2 in) across and 3 cm tall.