Buchanan, Ohio
[Image:OHMap-doton-buchanan.png|right|Location of Buchanan, Ohio]
Buchanan is an unincorporated community in Pebble Township, Pike County, Ohio, United States. It shares nearby Waverly, Ohio's ZIP code 45690. It lies along State Route Ohio State [Route 772|772].
The community was named after James Buchanan, 15th President of the United States.