| Nom du Parc | Etat/Ville | Type du Parc |
| David Berger National Memorial | Ohio (Cleveland Heights) | National Memorial |
| Dayton Aviation Heritage National Historical Park | Ohio (Dayton) | National Historical Park |
| De Soto National Memorial | Floride (Bradenton) | National Memorial |
| Dead horse Point State Park | Utah (Moab) | State Park |
| Death Valley National Park | Californie (Death Valley) | National Park |
| Delaware & Lehigh National Heritage Corridor | Pennsylvanie (Easton) | National Heritage Corridor |
| Delaware National Scenic River | Pennsylvanie (La rivière Delawere forme la frontière entre le New Jersey et la Pennsylvanie) | National Scenic River |
| Delaware Water Gap National Recreation Area | Pennsylvanie (Le parc est le long de la rivière Delawere dans les états du New Jersey et de la Pennsylvanie) | National Recreation Area |
| Denali National Park and Preserve | Alaska (Denali Park) | Park and Preserve |
| Deshler-Morris House | Pennsylvanie (Philadelphia) | |
| Devils Postpile National Monument | Californie (Mammoth Lakes) | National Monument |
| Devils Tower National Monument | Wyoming (Devils Tower) | National Monument |
| Dinosaur National Monument | Colorado (Vernal en Utah et Dinosaur au Colorado) | National Monument |
| Dry Tortugas National Park | Floride (Key West) | National Park |
