拉帕汉诺克县（Rappahannock County, Virginia）是美国维吉尼亚州北部的一个县。面积691平方公里。根据美国2000年人口普查，共有人口6,983人。县治华盛顿 (Washington)。

第一个县成立于1656年，解散于1662年。目前的县成立于1833年。县名是阿尔冈昆诸语lappihanne，意思是「急速上升的河水」或「潮水到达的地方」。

Rappahannock County is a county located in the Commonwealth of Virginia. As of the 2010 census, the population was 7,373. Its county seat is Washington. The name "Rappahannock" comes from the Algonquian word lappihanne (also noted as toppehannock), meaning "river of quick, rising water" or "where the tide ebbs and flows."