Piper hederaceum, commonly known as the giant pepper vine, is a species of plants in the pepper family Piperaceae. It is a twining climber with a stem diameter up to 15 cm (5.9 in) which is endemic to eastern Australia, found from Lockhart River, Queensland, to Bermagui, New South Wales. It inhabits tropical, subtropical and temperate rainforest at altitudes from sea level to about 1,200 m (3,900 ft).