| Nom du Parc | Etat/Ville | Type du Parc |
| Abraham Lincoln Birthplace National Historic Site | Kentucky | National Historic Site |
| Acadia National Park | Maine (Bar Harbor) | National Park |
| Adams National Historical Park | Massachusetts (Quincy) | National Historical Park |
| Agate Fossil Beds National Monument | Nebraska (Harrison) | National Monument |
| Ala Kahakai National Historic Trail | Hawaii (Harrison) | National Historic Trail |
| Alagnak Wild River | Alaska (King Salmon) | Wild River |
| Alcatraz Island | Californie (San Francisco) | |
| Aleutian World War II National Historic Area | Alaska (Unalaska/Dutch Harbor) | National Historic Area |
| Alibates Flint Quarries National Monument | Texas (Fritch) | National Monument |
| Allegheny Portage Railroad National Historic Site | Pennsylvanie (Gallitzin) | National Historic Site |
| Amistad National Recreation Area | Texas (Del Rio) | National Recreation Area |
| Anacostia Park | Columbia (district) (Washington) | Park |
| Andersonville National Historic Site | Georgie (Andersonville) | National Historic Site |
| Andrew Johnson National Historic Site | Tennessee (Greeneville) | National Historic Site |
| Aniakchak National Monument & Preserve | Alaska (King Salmon) | National Monument & Preserve |
| Antelope Canyon Navajo Tribal Park | Arizona (Page) | Navajo Tribal Park |
| Antelope Island State Park | Utah (Salt Lake City) | State Park |
| Antietam National Battlefield | Maryland (Sharpsburg) | National Battlefield |
| Antietam National Cemetery | Maryland (Sharpsburg) | National Cemetery |
| Apostle Islands National Lakeshore | Wisconsin (Lake Superior) | National Lakeshore |
| Appalachian National Scenic Trail | Maine (Maine to Georgia) | National Scenic Trail |
| Appomattox Court House National Historical Park | Virginie (Appomattox) | National Historical Park |
| Arches National Park | Utah (Moab) | National Park |
| Arkansas Post National Memorial | Arkansas (Gillett) | National Memorial |
| Arlington House, The Robert E. Lee Memorial | Virginie (Arlington) | |
| Assateague Island National Seashore | Maryland (Du Maryland à Washington) | National Seashore |
| Aztec Ruins National Monument | Nouveau Mexique (Aztec) | National Monument |
Liste des parcs nationaux usa classée par type (PDF)
Liste des parcs nationaux usa classée par type
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