Philautus hosii is a species of frog in the family Rhacophoridae. It is endemic to Borneo and has been found at 1,351 m (4,432 ft) above sea level. The specific name of the synonym, Polypedates chlorophthalmus, refers to its "remarkable green iris", from the Greek for "green-eyed". Accordingly, the common name green-eyed tree frog has been coined for the species.

Its natural habitat is subtropical or tropical moist lowland forests. It is threatened by habitat loss.

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