The Bismarck masked flying fox (Pteropus capistratus) is a species of flying fox in the family Pteropodidae found in Papua New Guinea and named after the Bismarck Archipelago. It was originally considered a subspecies of Pteropus temminckii before being reassessed in 2001. This species has two subspecies, P. c. capistratus and P. c. ennisae. The species has sometimes been classified as a subspecies of Pteropus temminckii. The IUCN classified it as Near Threatened in 2009, noting that the rate of decline is almost high enough to reclassify the species as Vulnerable.