Rappahannock County is a county located in the northern Piedmont region of the Commonwealth of Virginia, US, adjacent to Shenandoah National Park. As of the 2020 Census, the population was 7,348. Its county seat is Washington. The name "Rappahannock" comes from the Algonquian word lappihanne, meaning "river of quick, rising water" or "where the tide ebbs and flows." The county is included in the Washington-Arlington-Alexandria, DC-VA-MD-WV Metropolitan Statistical Area.

The town of Washington, Virginia, is a historic village located in the eastern foothills of the Blue Ridge Mountains near Shenandoah National Park. The entire town is listed on the National Register of Historic Places as a historic district, Washington Historic District. It is the county seat of Rappahannock County, Virginia.