Monocacy

Monocacy (Shawnee: Monnockkeseymay) may refer to the Monocacy River in Maryland, USA.

Monocacy may also refer to:

Other streams

 * Little Monocacy River, a tributary of the Potomac River in Maryland
 * Monocacy Creek (Lehigh River tributary), a tributary of the Lehigh River in Pennsylvania
 * Monocacy Creek (Schuylkill River), a tributary of the Schuylkill River in Pennsylvania

Ships

 * USS Monocacy (1864), the first Monocacy, a gunboat launched in, and served until 1903
 * USS Monocacy (PG-20), the second Monocacy, commissioned in 1914 and decommissioned in 1939
 * USS Genesee (AT-55), originally the civilian tug Monocacy (1905)

Other

 * Monocacy Aqueduct, crosses the Monocacy River near its mouth
 * Monocacy National Battlefield, memorializing the Battle of Monocacy (1864), fought near the Monocacy River
 * Battle of Monocacy, the July 1864 Civil War battle
 * Monocacy (MARC station) named for the battlefield site
 * Monocacy Station, Pennsylvania, an unincorporated community in Berks County, Pennsylvania