Morethia storri, also known commonly as the top end firetail skink or Storr's morethia, is a species of lizard in the family Scincidae.

The species is endemic to Australia.

The specific name, storri, is in honor of Australian herpetologist Glen Milton Storr.

[2] M. storri is found in Northern Territory and Western Australia, Australia.

[3] The preferred natural habitats of M. storri are grassland, shrubland, and forest.