Sclerococcum serusiauxii is a species of lichenicolous fungus in the family Dactylosporaceae.

The type was collected in Col de la Pierre St Martin (Spanish Pyrenees in Navarre), at an altitude of 1,550 m (5,090 ft).

The specific epithet honours Belgian lichenologist Emmanuël Sérusiaux, who collected the type specimen in 1989.

The fungus forms convex dark brown to black sporodochia that typically measure 60–180 by 60–100 μm.

The presence of the fungus does not cause damage to the host lichen.