The mountain stream tree frog (Ranoidea barringtonensis) is a species of tree frog native to highland areas of NSW, Australia stretching from the Myall Lakes area, north to around Dorrigo National Park and west to Barrington Tops National Park.

Morphological differences have not been fully studied yet, but visible physical differences between frogs from Barrington Tops and Dorrigo, New South Wales, in comparison to frogs from south-eastern Queensland and northern NSW are discussed in a key on the leaf green tree frog page.

A pale brown (almost light yellow) stripe runs from the nostril, across the eye, over the tympanum, and down to the shoulder, where the line widens and dissipates.

Metamorphs closely resemble the adults, although they are mostly brown in colour.

This species inhabits flowing creeks in mountainous areas, in rainforests and adjacent wet sclerophyll forests, as its name suggests.