Rhacophorus aurantiventris (common name: orange-belly treefrog, orange-bellied treefrog) is a species of frog in the Rhacophoridae family endemic to Taiwan. It is a medium-sized tree frog, 4–5 cm (1.6–2.0 in) in snout-vent length. Its natural habitat is primary broadleaf forest. It is believed to be on decline, although reasons for this are not known (its habitat is not considered threatened).