Litoria bibonius is a species of frog of the subfamily Pelodryadinae.

This species is found in the D'Entrecasteaux, Normanby and Goodenough islands in Papua New Guinea.

It can be distinguished from other lowland New Guinea green tree frogs by the following features: only one third of its fingers are webbed, it has no vomerine teeth, it has a smooth tympanium instead of a granular one, and its snout is long and pointed.

The hidden surfaces of its thighs are yellow and its dorsum is uniformly green.

Litoria bibonius is part of the species-group L. bicolor, which was created to accommodate 7 species from the region that had characteristics in common.