Killarney-Turtle Mountain is a rural municipality (RM) located in the Westman Region of Manitoba, Canada.

[3] Land surveyor and homesteader John Sydney O’Brien named the adjoining lake "Killarney" after the Irish town, because the landscape reminded him of home.

The North-West Mounted Police used the trail as they travelled west to the Rockies in an effort to tame the prairies.

Prior to this time, the area was home to many Indigenous people, as well as hunters and trappers taking part in the fur trade.

On December 1, 1903, Killarney was incorporated as a village, breaking away from the RM of Turtle Mountain.