Rapidan may refer to:
Minnesota
- Rapidan Township, Blue Earth County, Minnesota
- Rapidan, Minnesota
- Rapidan Dam, a concrete gravity dam on the Blue Earth River
Virginia
- Rapidan, Virginia
- Rapidan Camp, President Hoover's retreat
- Rapidan River
- Rapidan Wildlife Management Area
Other uses
- USS Rapidan (1919–1946), a Patoka-class replenishment oiler
See also
- Rapydan, a local anesthetic combination