The Manus Masked Owl (Tyto manusi) is a barn owl endemic to Manus Island in Admiralty Islands, Papua New Guinea. Some authors consider it a subspecies of Australian Masked Owl (Tyto novaehollandiae).

It is a poorly-known forest-dwelling species, which is rarely seen. Comparison with the closely related Australian Masked Owl indicates it is likely to have large territories, and the population may be smaller than 1000.