| Nom du Parc | Etat/Ville | Type du Parc |
| Rainbow Bridge National Monument | Utah (Page) | National Monument |
| Red Rock Canyon National Conservation Area | Nevada (Las Vegas) | National Conservation Area |
| Redwood National and State Parks | Californie (Crescent City au nord et McKinleyville au sud) | National and State Parks |
| Richmond National Battlefield Park | Virginie (Richmond) | National Battlefield Park |
| Rio Grande Wild and Scenic River | Texas (Richmond) | Wild & Scenic River |
| Rock Creek Park | Columbia (district) (Washington) | Park |
| Rocky Mountain National Park | Colorado (Estes Park à l'est et Grand Lake à l'ouest) | National Park |
| Roger Williams National Memorial | Rhode Island (Providence) | National Memorial |
| Roosevelt Campobello International Park | Maine (Lubec) | International Park |
| Rosie the Riveter WWII Home Front National Historical Park | Californie (Richmond) | National Historical Park |
| Ross Lake National Recreation Area | Washington (Newhalem) | National Recreation Area |
| Russell Cave National Monument | Alabama (Bridgeport) | National Monument |
Liste des parcs nationaux usa classée par type (PDF)
Liste des parcs nationaux usa classée par type
