Ocellularia inthanonensis is a species of corticolous (bark-dwelling) lichen in the family Graphidaceae.

Found in northern Thailand, it was formally described as a new species in 2002 by lichenologists Natsurang Homchantara and Brian J. Coppins.

The type specimen was collected from a tree trunk in a cloud forest in Doi Inthanon National Park (Chiang Mai Province) at an elevation of 2,450 m (8,040 ft).

The specific epithet refers to the type locality.

The lichen has a whitish mineral-grey thallus that is wrinkled and irregularly cracked.