noun

• A habitational surname from Scottish Gaelic from Scotland.
• A number of places in the United States:
• An unincorporated community in Tuolumne County, California.
• A small city, the county seat of Haralson County, Georgia.
• An unincorporated community in Floyd County, Indiana.
• An unincorporated community in Cedar County, Iowa.
• A city and township in Berrien County, Michigan.
• A village in the town of Cortlandt, Westchester County, New York.
• A minor city in Stutsman County, North Dakota.
• An unincorporated community in Harney County, Oregon.
• An unincorporated community in Henry County, Tennessee.
• A town in Botetourt County, Virginia.
• A town in Outagamie County, Wisconsin.
• A number of places elsewhere:
• A locality in the City of Maitland and City of Cessnock, New South Wales, Australia.
• A locality in Victoria Daly regional council area, Northern Territory, Australia.
• A locality in Goyder regional council area, South Australia.
• The Rural Municipality of Buchanan No. 304, a rural municipality in eastern Saskatchewan, Canada.
• A village in Saskatchewan within the rural municipalty.
• A coastal town in Grand Bassa County, Liberia.
• A historic parish in Stirlingshire, Scotland, which included Milton of Buchanan and Buchanan Smithy.