Geomyersia coggeri, Cogger's island skink, is a species of lizard in the family Scincidae. The species is endemic to the Admiralty Islands.
The specific name, coggeri, is in honor of Australian herpetologist Harold Cogger.
The preferred natural habitat of G. coggeri is forest, but it has also been found under debris in coconut plantations.
G. coggeri is a small, brown lizard, with a rounded snout. It has four short well-developed legs, with five digits on each foot.
The mode of reproduction of G. coggeri is unknown.