Geltingia is a fungal genus in the family Helicogoniaceae. It is monotypic, containing the single lichenicolous species Geltingia associata. The genus was circumscribed in 1990 by mycologists Vagn Alstrup and David Leslie Hawksworth. The genus name honours Danish scientist Paul Gelting.

It has a circumpolar distribution. It is known to grow on the lichens Ochrolechia frigida and Ochrolechia upsaliensis.

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