Pertusaria hypostictica is a species of corticolous (bark-dwelling), crustose lichen in the family Pertusariaceae.

[1] Found in Thailand,[2] it was formally described as a new species in 2005 by Sureeporn Jariangprasert.

The type specimen was collected from Khao Yai National Park (Nakhon Ratchasima province) at an altitude of 1,233 m (4,045 ft), where it was found growing on the bark of a Fagaceae plant.

It has also been found in the peninsular region in the southern part of Thailand.

The species epithet refers to the presence of hypostictic acid as a minor lichen product.