Unalaska collared lemming

{{Short description|Species of rodent}}

{{Speciesbox

| name = Unalaska collared lemming

| status = DD | status_system = IUCN3.1

| status_ref = {{cite iucn |author=Garibaldi, A. |date=2019 |title=Dicrostonyx unalascensis |volume=2019 |page=e.T39974A22331447 |doi=10.2305/IUCN.UK.2019-2.RLTS.T39974A22331447.en |access-date=12 November 2021}}

| genus = Dicrostonyx

| species = unalascensis

| authority = Merriam, 1900

| synonyms =

}}

The Unalaska collared lemming (Dicrostonyx unalascensis) is a species of rodent in the family Cricetidae.

This species is found on two islands, Umnak and Unalaska, in the Aleutian Archipelago of Alaska in the United States.

Its natural habitat is tundra.