Spences Reefs is a pair of reefs consisting of two islets, with a combined area of 0.65 ha, in Tasmania, Australia.
They are close to the south-east corner of Little Green Island and part of the Great Dog Island Group, lying in eastern Bass Strait between Flinders and Cape Barren Islands in the Furneaux Group.
[1] The islets are part of the Franklin Sound Islands Important Bird Area, identified as such by BirdLife International because it holds over 1% of the world populations of six bird species.
[2] Recorded breeding seabird and wader species are little penguin, white-faced storm-petrel, sooty oystercatcher, pied oystercatcher and Caspian tern.
Rats are present, with evidence that they prey on the storm-petrels.