Callaghan is a census-designated place (CDP) in Alleghany County, Virginia, United States. The population as of the 2010 Census was 348.
Humpback Covered Bridge and Wood Hall are listed on the U.S. National Register of Historic Places.
Coordinates: 37°48′43″N 80°04′27″W / 37.81194°N 80.07417°W