Mackenzie County is a specialized municipality in northern Alberta, Canada.

The municipal office is located in the hamlet of Fort Vermilion.

[1] Mackenzie County is in the northwest corner of the province of Alberta.

[5] It borders the province of British Columbia to the west; the Northwest Territories to the north; Improvement District No.

24 (Wood Buffalo National Park) and the Regional Municipality of Wood Buffalo to the east; and Northern Sunrise County, the Paddle Prairie Metis Settlement, and the County of Northern Lights to the south.

[5] The Peace River meanders eastward through the southeast portion of Mackenzie County.