The moustached kingfisher (Actenoides bougainvillei), also called Bougainville moustached kingfisher, is a species of bird in the family Alcedinidae. It is endemic to Bougainville Island in Papua New Guinea. An estimated 250–1,000 mature individuals are left. Their natural habitats are subtropical or tropical, moist, lowland forests and subtropical or tropical, moist, montane forests; they nest in tree holes. They are threatened by habitat loss and introduced predators.