The Eastern Grass-owl (Tyto longimembris), or Australian Grass-owl is a species of owl in the Tytonidae family. It is found in Australia, Bangladesh, China, Fiji, Hong Kong, India, Indonesia, Japan, Myanmar, Nepal, New Caledonia, Papua New Guinea, the Philippines, Taiwan, and Vietnam.

Though some authorities consider this owl to be conspecific with the African Grass-owl, T. capensis, other consider it to be a valid species.