| Nom du Parc | Etat/Ville | Type du Parc |
| Badlands National Park | Dakota du Sud (Wall) | National Park |
| Baltimore-Washington Parkway | Maryland (Washingron D.C. and Baltimore) | Parkway |
| Bandelier National Monument | Nouveau Mexique (Los Alamos au nord et Santa Fe au sud) | National Monument |
| Battleground National Cemetery | Columbia (district) (Washington) | National Cemetery |
| Bears Ears National Monument | Utah (blanding) | National Monument |
| Bent's Old Fort National Historic Site | Colorado (La Junta) | National Historic Site |
| Bering Land Bridge National Preserve | Alaska (Nome) | National Preserve |
| Big Bend National Park | Texas (Terlingua) | National Park |
| Big Cypress National Preserve | Floride (Ochopee) | National Preserve |
| Big Hole National Battlefield | Montana (Wisdom) | National Battlefield |
| Big South Fork National River & Recreation Area | Kentucky (Oneida) | National River & Recreation Area |
| Big Thicket National Preserve | Texas (Beaumont) | National Preserve |
| Bighorn Canyon National Recreation Area | Montana (Fort Smith) | National Recreation Area |
| Biscayne National Park | Floride (Miami) | National Park |
| Black Canyon Of The Gunnison National Park | Colorado (Montrose) | National Park |
| Blackstone River Valley National Heritage Corrido | Massachusetts (The Blackstone Valley) | National Heritage Corridor |
| Blue Ridge Parkway | Virginie (Blue Ridge Mountains en Virginie et Caroline du nord) | Parkway |
| Bluestone National Scenic River | Virginie-Occidentale (Athens, Pipestem et Hinton) | National Scenic River |
| Booker T Washington National Monument | Virginie (Hardy) | National Monument |
| Boston African American National Historic Site | Massachusetts (Boston) | National Historic Site |
| Boston Harbor Islands National Recreation Area | Massachusetts (Boston) | National Recreation Area |
| Boston National Historical Park | Massachusetts (Boston) | National Historical Park |
| Brices Cross Roads National Battlefield Site | Mississippi (Baldwyn) | National Battlefield Site |
| Brown V Board Of Education National Historic Site | Kansas (Topeka) | National Historic Site |
| Bryce Canyon National Park | Utah (Bryce Canyon City) | National Park |
| Buck Island Reef National Monument | (Christiansted) | National Monument |
| Buffalo National River | Arkansas (Harrison and St. Joe) | National River |
