| Nom du Parc | Etat/Ville | Type du Parc |
| Cabrillo National Monument | Californie (San Diego) | National Monument |
| California National Historic Trail | (San Diego) | National Historic Trail |
| Canaveral National Seashore | Floride (Titusville and New Smyrna Beach) | National Seashore |
| Cane River Creole National Historical Park | Louisiane (Natchez) | National Historical Park |
| Cane River National Heritage Area | Louisiane (Natchitoches) | National Heritage Area |
| Canyon De Chelly National Monument | Arizona (Chinle) | National Monument |
| Canyonlands National Park | Utah (Moab pour Island In The Sky et pour The Needles) | National Park |
| Cape Cod National Seashore | Massachusetts (Wellfleet) | National Seashore |
| Cape Hatteras National Seashore | Caroline du Nord (Nags Head, Buxton, Ocracoke) | National Seashore |
| Cape Henry Memorial | Virginie (Fort Story) | |
| Cape Krusenstern National Monument | Alaska (Kotzebue) | National Monument |
| Cape Lookout National Seashore | Caroline du Nord (Harkers Island) | National Seashore |
| Capitol Hill Parks | Columbia (district) (Washington) | |
| Capitol Reef National Park | Utah (Torrey) | National Park |
| Capulin Volcano National Monument | Nouveau Mexique (Capulin) | National Monument |
| Carl Sandburg Home National Historic Site | Caroline du Nord (Flat Rock) | National Historic Site |
| Carlsbad Caverns National Park | Nouveau Mexique (Carlsbad au nord et El Paso au sud) | National Park |
| Casa Grande Ruins National Monument | Arizona (Coolidge) | National Monument |
| Castillo De San Marcos National Monument | Floride (St. Augustine) | National Monument |
| Castle Clinton National Monument | New York (New York) | National Monument |
| Catalina State Park | Arizona (Tucson) | State Park |
| Cathedral Gorge State Park | Nevada (Panaca) | State Park |
| Catoctin Mountain Park | Maryland (Thurmont) | Park |
| Cedar Breaks National Monument | Utah (Cedar City) | National Monument |
| Cedar Creek & Belle Grove National Historical Park | Virginie (Middletown and Strasburg) | National Historical Park |
| Central High School National Historic Site | Arkansas (Little Rock) | National Historic Site |
| Chaco Culture National Historical Park | Nouveau Mexique (Nageezi) | National Historical Park |
| Chamizal National Memorial | Texas (El Paso) | National Memorial |
| Channel Islands National Park | Californie (Ventura) | National Park |
| Charles Pinckney National Historic Site | Caroline du Sud (Mt. Pleasant) | National Historic Site |
| Chattahoochee River National Recreation Area | Georgie (Atlanta) | National Recreation Area |
| Chesapeake & Ohio Canal National Historical Park | Maryland (Potomac River) | National Historical Park |
| Chesapeake Bay Gateways Network | Maryland (Chesapeake Bay Watershed) | |
| Chickamauga & Chattanooga National Military Park | Georgie (Fort Oglethorpe) | National Military Park |
| Chickasaw National Recreation Area | Oklahoma (Sulphur) | National Recreation Area |
| Chimney Rock National Historic Site | Nebraska (Bayard) | National Historic Site |
| Chiricahua National Monument | Arizona (Willcox) | National Monument |
| Christiansted National Historic Site | (Christiansted, St. Croix) | National Historic Site |
| City Of Rocks National Reserve | Idaho (Almo) | National Reserve |
| Clara Barton National Historic Site | Maryland (Glen Echo) | National Historic Site |
| Claude Moore Colonial Farm | Virginie (McLean) | |
| Colonial National Historical Park | Virginie (Jamestown and Yorktown) | National Historical Park |
| Colorado National Monument | Colorado (Fruita) | National Monument |
| Congaree National Park | Caroline du Sud (Hopkins) | National Park |
| Constitution Gardens | Columbia (district) (Washington) | |
| Coral pink sand dunes State Park | Utah (Kananb) | State Park |
| Coronado National Memorial | Arizona (Hereford) | National Memorial |
| Cowpens National Battlefield | Caroline du Sud (Chesnee) | National Battlefield |
| Crater Lake National Park | Oregon (Medford et Klamath Falls au sud et Roseburg et Bend au nord) | National Park |
| Craters Of The Moon National Monument and Preserve | Idaho (Arco) | National Monument & Preserve |
| Cumberland Gap National Historical Park | Kentucky (Middlesboro) | National Historical Park |
| Cumberland Island National Seashore | Georgie (Saint Marys) | National Seashore |
| Curecanti National Recreation Area | Colorado (Gunnison) | National Recreation Area |
| Custer State Park | Dakota du Sud (Custer) | State Park |
| Cuyahoga Valley National Park | Ohio (Cleveland and Akron) | National Park |
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