Porina gryseelsiana is a species of foliicolous lichen belonging to the family Porinaceae.

[1] It was discovered in Orientale Province, in the Democratic Republic of the Congo on the leaves of understorey plants in a tropical rainforest.

It is a rare species which is only known from this one collection.

[2] It resembles Porina octomera in appearance but can be differed from it by its orange-brown perithecia and larger spores.

The photobiont of this species is the green alga Phycopeltis.