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

Found in southeastern 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 Namtok Phlio National Park (Chanthaburi Province); here, in a moist, lowland evergreen forest, it was found growing on Anisoptera costata.

The lichen has a shiny, smooth, greenish thallus with a dense cortex and a white medulla with many crystals.

Its ascospores are ellipsoid, thin walled, colourless, and typically measure 14.0–17.0 by 5.0–6.7 μm.