The Fiordland skink (Oligosoma acrinasum) is a species of skink endemic to the Fiordland temperate forests ecoregion of South Island, New Zealand.

[2] Their distribution has declined due to introduced predators.

Currently it lives only on foreshore rocks and boulder beaches on the Fiordland coast.

[1] This species was successfully translocated to Hāwea Island in 1988.

It has managed to naturally recolonize another island after rats were eradicated.