Buchanan is an unincorporated community in Harney County, Oregon, United States.

[2] The community was named after the family of William D. Buchanan, who, with his sons Joe and George, homesteaded there beginning in 1886.

[6] Today Buchanan has a Burns mailing address and a business that includes a tractor repair shop, gas station, gallery, and free museum,[7] all located within the only building in the community.

[8] The school once stood along Little Rock Creek on the site of the present-day Buchanan Springs Rest Area on U.S. 20, a mile northeast of the community.

[5] In the 21st century, Buchanan is a stop on the Eastern POINT intercity bus line between Bend and Ontario.