The Green-backed kingfisher (Actenoides monachus), is a species of tree kingfisher in the Alcedinidae family. It is endemic to Indonesia, where it is restricted to north and central Sulawesi, and the islands of Manadotua and Lembeh. It can be found in the protected areas of Lore Lindu, Bogani Nani Wartabone, and Tangkoko Batuangus. Its natural habitat is dense tropical moist lowland forests up to 900 m elevation. It is threatened by habitat loss by deforestation. The black-headed kingfisher was previously considered part of this species, but was elevated to species status in 2014.