| Fort Marcy | |
|---|---|
| Part of the Civil War defenses of Washington, D.C. | |
| Fairfax County, Virginia | |
&sq=Facebook&lang=en&file=File:Fort_Marcy_-_historical.jpg) Fort Marcy as it appeared during the Civil War | |
&sq=Facebook&lang=en&file=File:Location_map_District_of_Columbia_street.png)  Fort Marcy | |
| Coordinates | 38°56′06″N 77°07′34″W / 38.93500°N 77.12611°W |
| Type | Earthwork fort |
| Site information | |
| Controlled by | Union Army |
| Condition | Park |
| Site history | |
| Built | 1861 |
| Built by | U.S. Army Corps of Engineers |
| In use | 1861–1865 |
| Materials | Earth, timber |
| Demolished | 1865 |
| Battles/wars | American Civil War |
Fort Marcy was a Union fortification protecting Washington, D.C. during the American Civil War. Its remains are now administered by the National Park Service as part of the George Washington Memorial Parkway in Fairfax County, Virginia.