Fissurina microcarpa is a species of corticolous (bark-dwelling) script lichen in the family Graphidaceae.

[1] Found in India, it was formally described as a new species in 2012 by Bharati Sharma, Pradnya Khadilkar, and Urmila Makhija.

The type specimen was collected from Upper Kodayar (Tamil Nadu).

The lichen thallus that is brownish, cracked, warty, and glossy.

The lichen's ascospores are hyaline, muriform, and multilocular; they measure 87–125 by 25–37 μm and have a 5–8 μm thick halo.