The Biak naked-backed fruit bat (Dobsonia emersa) is a species of megabat in the family Pteropodidae.

Its species name "emersa" is from Latin "emergere," meaning "to emerge."

Bergmans and Sarbini selected this name because zoologists such as Fredericus Anna Jentink had written about Dobsonia species from this area long ago, but had overlooked this taxon.

Adults have a forearm length of approximately 114 mm (4.5 in) and weigh 169–180 g (6.0–6.3 oz).

It is susceptible to population decline via overhunting and disturbance of its roost sites.